If you're talking about my opionion about the most worthless class PvPwise, I'd say warrior.  Even as a tank I get killed fast by lower level toons if they have a magic advantage or by hunters who can have their pets attack me while they sit back and shoot the crap out of me.  I'm a lvl 59 and I can get killed by a lvl 53 easy.  PvP sucks in my opinion.  I should have created a Hunter but Warrior sounded so cool to a noob.