Here are this weeks power ratings. Agree or disagree with the rankings? Let him know on twitter @ngreenberg.

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1. Carolina Panthers (2-0), Last week’s ranking: 3

The Panthers are for real. Their defense allowed 4.6 net yards per pass through the first two weeks of the season and is rated as the second best defensive unit in the league by Pro Football Focus. If Cam Newton can continue to get healthy, they will be hard to stop.

2. Cincinnati Bengals (2-0), Last week’s ranking: 8

The injury to wide receiver A.J. Green bears watching, but Andy Dalton leads an offense with other weapons, such as Mohamed Sanu, who has caught seven passes for 120 yards and a touchdown.

3. Buffalo Bills (2-0), Last week’s ranking: 26

How does a team jump from 26th to third overall in one week? Quality wins and a small sample size. The Bills have wins over the Chicago Bears and Miami Dolphins. Those teams have wins over San Francisco and New England, respectively, making the Bills appear way above average. Do I expect Buffalo to be the best team in the league after all 16 games are played? No, but for now they are 2-0 with a plus-22 point differential.

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4. Houston Texans (2-0), Last week’s ranking: 15

When J.J. Watt, one of the league’s best defenders, is catching touchdowns, things are going right.

5. Chicago Bears (1-1), Last week’s ranking: 12

It took last minute gaffes by San Francisco for Chicago to get their first win of the season, but their loss to Buffalo is looking less troublesome right now.

6. New England Patriots (1-1), Last week’s ranking: 10

7. Arizona Cardinals (2-0), Last week’s ranking: 17

Patrick Peterson is starting slow this year, but offseason acquisition Antonio Cromartie has held opposing quarterbacks to a 50.3 passer rating when they throw his way in coverage.

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8. San Francisco 49ers (1-1), Last week’s ranking: 5

They had a chance to move up in the rankings but Chicago’s disciplined defense proved to to be their undoing.

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9. Denver Broncos (2-0), Last week’s ranking: 2

Peyton Manning to Julius Thomas has been impressive (11 for 13, 143 yards and four touchdowns) but the team overall has not been as dominant as it was last season. At least not yet.

10. Philadelphia Eagles (2-0), Last week’s ranking: 4

Eagles pulled out another win despite poor play from quarterback Nick Foles. Defenses need to figure out how to neutralize Chip Kelly’s up-tempo offense. Then they have to neutralize running back Darren Sproles. Until then, Eagles may continue to soar.

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11. Miami Dolphins (1-1), Last week’s ranking: 16

Cameron Wake has been their best player on the pass rush: Two sacks, three quarterback hits and three hurries on 58 pass-rush snaps.

12. Baltimore Ravens (1-1), Last week’s ranking: 21

A strong win on Thursday under less-than-optimal conditions showed they could still be a contender for the AFC North.

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13. Dallas Cowboys (1-1), Last week’s ranking: 20

The Cowboys defense suffered a slew of injuries but are rated by PFF as the third best pass rush in the league. With a bounce-back victory against Tennessee, the Cowboys are still a viable option to win the lackluster NFC East.

14. Washington Redskins (1-1), Last week’s ranking: 29

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Everything that could go wrong for Washington did on Sunday. Robert Griffin III got hurt and could be out several weeks. DeSean Jackson suffered another shoulder injury. And Kirk Cousins played so well, we may have a quarterback controversy on our hands sooner rather than later.

15. Minnesota Vikings (1-1), Last week’s ranking: 22

Quarterback Matt Cassel is a turnover machine, making the chants for rookie Teddy Bridgewater louder with each interception he throws.

16. San Diego Chargers (1-1), Last week’s ranking: 19

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The Chargers stunned the defending champ Seattle Seahawks and quarterback Philip Rivers targeted Richard Sherman six times for a 95.1 passer rating on those plays.

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17. Seattle Seahawks (1-1), Last week’s ranking: 1

A free fall from first to 17th? Don’t read too much into it — poor performance in small sample sizes will distort a team’s true ability — but the loss to the Chargers makes them look vulnerable.

18. Tennessee Titans (1-1), Last week’s ranking: 24

The running game has been strong and is rated second best by PFF’s game charters. Shonne Green has 111 yards on 20 attempts and six missed tackles.

19. Cleveland Browns (1-1), Last week’s ranking: 28

The Browns have averaged 5.1 yards per rushing attempt (fifth highest in league) and has received the highest overall rating on offense by PFF’s game charters.

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20. Detroit Lions (1-1), Last week’s ranking: 7

Who are the real Detroit Lions? The Lions who beat the Giants with 417 total yards or the Lions who lost to Carolina and had three turnovers? This week’s game against the Packers will probably give us the answer.

21. Atlanta Falcons (1-1), Last week’s ranking: 13

A win over New Orleans and a tie for best yard per offensive play (6.5) make the Falcons a dark horse to win the NFC South.

22. New York Jets (1-1), Last week’s ranking: 23

The J-E-T-S, Jets, Jets, Jets were close to starting 2-0, but a tough loss to the Green Bay Packers keeps them in the bottom third of the rankings. Inside linebacker Demario Davis has been great stopping the run: Five tackles, one assist and five stops over 34 plays.

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23. Green Bay Packers (1-1), Last week’s ranking: 9

Green Bay just looks lost, and is getting no help form its special teams. Its average starting field position is its own 23-yard line.

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24. Pittsburgh Steelers (1-1), Last week’s ranking: 14

The Steelers will face a tough task against Carolina this week, and will need Le’Veon Bell to keep the momentum going. Bell has averaged 3.4 yards after contact per rushing attempt and has broken a total of 15 tackles — nine rushing and six receiving.

25. New Orleans Saints (0-2), Last week’s ranking: 6

If I told you a team saw half its offensive drives end up with points on the board, averaged more than three minutes on those drives and had a quarterback — who is healthy — with four of the eight seasons passing for over 5,000 yards, would you think it would be 0-2? Me either, but here we are.

26. St. Louis Rams (1-1), Last week’s ranking: 30

Backup quarterback Austin Davis helped the St. Louis Rams get a win over Tampa Bay on Sunday, but injuries will eventually take their toll.

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27. Tampa Bay Buccaneers (0-2), Last week’s ranking: 27

They lost to the Rams who started a third-string quarterback and are yielding just 1.6 points per offensive drive (25th out of 32 teams).

28. Indianapolis Colts (0-2), Last week’s ranking: 11

Quarterback Andrew Luck has an 84.7 passer rating when teams lay off the blitz, compared with 95.2 last season. That was the key for the Eagles in Week 2, who held off the blitz and kept Luck to 8-of-17 passing for 71 yards.

29. Oakland Raiders (0-2), Last week’s ranking: 31

The oldest team in the NFL has the sixth best starting position on its offensive drives (own 22.6 yard line) but is 30th in the league in points per drive (1.3).

30. Kansas City Chiefs (0-2), Last week’s ranking: 18

The Chiefs could be without star running back Jamaal Charles and their upcoming schedule doesn’t offer many opportunities to crawl out of this 0-2 hole: Miami, New England and San Francisco could set them up for an 0-5 start before their bye week.

31. New York Giants (0-2), Last week’s ranking: 25

It looked like Eli Manning and the Giants finally grasped the new offense, but then four turnovers caused them to be winless to start the season.

32. Jacksonville Jaguars (0-2), Last week’s ranking: 32

They yielded 10 sacks to the Washington Redskins. And since jumping to a 17-0 lead against the Eagles in the first half of Week 1, have been outscored 75-10.