If you're in Kara complaining about your class/spec, you're just a noob. Get better gear and see the real game, until then, shut up.
If you're in Sunwell, what is there to complain about? You're proof that your class/spec clearly does work, at least well enough to be in demand.
If you're 1400, you're a noob and shouldn't talk like you know real PvP.
If you're 2200, aren't you proof that it can be done, that your class/spec does work?