Everyone gets a say.
DPS warrior vs say a dps mage. Warrior can crit for about 2500 a few times in a battle. A mage will consistantly do 1500 non crit, while critting for 3k.
My fury warrior is alot of fun in PVP I normally land in the top 5. I admit I can do alot of damage but take third or forth place to Loks, Mages, and Hunters that are equally geared.
You would have to be "over geared" to beat a dps caster. I hate that.. but it seems true.