I've heard hunters are losing dead zone and also I've heard its gone on the PTR. Shamans dominate hunters in PvP since they can keep them slowed, and reduce ranged damage taken. Frost mages can beat nearly any class except shamans and in the upcoming expansion I'm going to guess hunters too since they cant exploit the hunter's dead zone. Mortal strike warriors beat shamans and rogues, but lose to Shadow priests, Frost mages, and in SOME cases hunters. Ret paladins are getting an extreme buff and might be able to take alot more classes down in PvP also. Rogues beat casters, but lose to hunters and melee classes. Druids beat most everything except mortal strike warriors especially since arms is getting a buff in the next patch. Warlocks if resilience stacked can beat near anything except hunters, mages, and shamans.

This is mostly opinion.