Able to tank damage forever in bear form while laughing at you as you bleed to death. This is funny too. Bear form is now useless w/o its talents, which generally ain't chosen by a pvp'ing feral. In wotlk you used to give points to a talent called 'Survival of the Fittest'. ...
Slightly higherenergy Regeneration, so that you are actually able to play the talents that are better than others in whatever situation. Right now you can't even unlock Feral's (very low) full potential, since you get extremely energy starved on the way there. ...
(most of the time it is good enough, but we could include feral into that category), take for example a rogue, as combat they "can" pvp, but they won't get high ratings, as a mage fire or arcane isnt as good either, if we talk about warriors/dks they have one tank spec and ...