The F-15 Eagle – an air-superiority fighter that has dominated the dogfight arena sine it was introduced into service, then later emerged as a superb multi-role fighter.

The Su-27 Flanker– Russia's attempt to match the Eagle.

Which is the deadliest plane? To decide that, we will look at combat records, their avionics systems, their armament, as well as their performance specs to see who'd come out on top.

1. Combat Records

There's no better way to judge a plane then how it has done in combat. Forget the specs you see on a sheet of paper, forget what it looks like. Just judge it by its record.

An F-15 Eagle departs during the mission employment phase exercise at Nellis Air Force Base, Nev., Dec. 7, 2012. (U.S. Air Force photo/Senior Airman Brett Clashman)

The F-15 has seen a lot of action. Perhaps the most important number is: "zero." That is how many F-15s have been lost in air-to-air combat. This is an incredible feat for a plane that has been in service for 40 years and seen action in wars. In fact, the F-15 has shot down over 100 enemy planes with no losses.

The Su-27 family has seen much less action. Su-27s flown by the Ethiopian Air Force that saw combat in the 1998-2000 war with Eritrea scored at least two and as many as 10 air-to-air kills. The Flanker has also seen action over Syria, Chechnya, and Georgia, scoring one confirmed kill over Chechnya in 1994.

Advantage: F-15 Eagle

2. Avionics

In the modern age of aerial combat, the plane's electronics matter. Radar serves as eyes and ears, while electronic countermeasures (ECM) try to keep the other side deaf and blind.

The F-15 uses the AN/APG-63(V)3, an active electronically scanned array, or AESA, radar. This highly advanced system gives the Eagle a pair of very sharp "eyes" that locate targets up to 100 miles away and direct its radar-guided AIM-120 Advanced Medium Range Air-to-Air Missiles. The Eagle also has the AN/ALQ-135 ECM system, which is very useful against opposing radars, whether on missiles or aircraft.

The avionics suite inside an Su-27 Flanker. (Photo from Wikimedia)

The Su-27's avionics center around the N001 Mech radar, capable of tracking bomber-sized targets at 86 miles. For a target the size of the F-15, though, the range is only 62 miles. That is a difference of 38 miles – almost two-thirds of the Mech's range. The Flanker doesn't have internal jammers. Instead, there is the option to use two Sorbtsiya pods.

Advantage: F-15 Eagle

3. Armament

The F-15 can carry up to eight air-to-air missiles. The usual load is four AIM-120 AMRAAMs and four AIM-9X Sidewinders. It also carries a M61 20mm Gatling gun with 900 rounds of ammunition. The AIM-120D now in service has a range of 99 miles, while the AIM-9X can reach out to 22 miles. The AMRAAM is a "fire and forget" missile.

SU-27 "Flanker" launches an Adder air-to-air missile. (Photo: Russian Air Force)

The Su-27 carries six R-27 (AA-10 "Alamo" missiles), which have a range of up to 80 miles. These missiles use semi-active guidance, meaning the Flanker has to "paint" its target to guide the missile. That means flying straight and level – not the best idea in aerial combat.

The Flanker also carries up to four R-73 missiles (AA-11 "Archer"), which has a range of up to 19 miles, and has a GSh-30 30mm cannon.

Advantage: F-15 Eagle

4. Performance

The F-15 has a top speed of Mach 2.5, a combat radius of 1,222 miles, and can maneuver in a dogfight, pulling up to 9 Gs.

(Photo: U.S. Air Force Senior Airman John Hughel)

With three 600-gallon drop tanks and two 750-gallon conformal fuel tanks (Fuel And Sensor Tactical, or "FAST" packs), the F-15's range is 3,450 miles. In short, this plane has long "legs" and it can be refueled in flight by tankers.

The Su-27 has a top speed of Mach 2.35, a range of 2,193 miles, and is capable of some amazing aerobatic feats, notably the Pugachev Cobra. Like the F-15, it can pull 9 Gs in a maneuver. The Flanker can carry drop tanks and be refueled while flying.

Advantage: Draw

So, who wins? While the F-15 Eagle is an older design, its advantages — particularly avionics — put the Su-27 at a huge disadvantage. Russia has other planes in the Flanker family (the Su-35), but they are few and far between.

So, how might the engagement between four United States Air Force F-15s and four Su-27s from BadGuyLand go?

Well, the F-15s would probably detect the Su-27s first. Once in AMRAAM range, the Eagle pilots will open fire, most likely using two missiles per target. The Flankers would be obliterated.

If it got to close range, though, the engagement is likely to be a lot less one-sided. Here, the AA-11 and AIM-9 are equal, and both planes can pull 9 Gs.

The skill and training of the pilots will be decisive. In this case, we will assume that BadGuyLand's dictator, Sleazebag Swinemolestor, hasn't quite trained his pilots well, and some were selected for their political liability. In this mix-up, the Eagles shoot down three Flankers for the loss of one fighter – the first F-15 lost in air-to-air combat.

Either way, though, it is a safe bet that the F-15 still comes out on top.