Actually, the sample size is 100 (I think) for the official stats. Maybe thats the problem...

What I think you're not taking into consideration is that certain classes are just better than others at arena. That may simply be it....maybe.

Thank you, and goodnight.

EDIT: By better, I don't mean the players (2200+ players are ALL extremely skilled) but the potential of the class to be good. Or, in other words, the skill cap of a class is higher than another.