But secondly, a 60 percent reversal rate is actually below average based on the Washington Times' criteria. According to MediaMatters.org, the Supreme Court typically reverses about 75 percent of circuit court decisions that it chooses to rule upon.

The reason that the reversal rate is so high, of course, is that the Supreme Court has a lot of discretion about which cases it chooses to review and rule upon, and is generally not going to be inclined to overturn law dictated by a lower court unless the legal reasoning is substantially questionable and has a strong chance of reversal. The better metric would probably be the number of decisions that the Supreme Court overturned out of all of Sotomayor's majority opinions — whether the Court elected to review them in detail or not.