There are 2 things that need fixing in pvp, and none of them are class related (well one is sort of)
Bubble pop - this needs to be changed to a mez, it should not be a stun. This would even fix the clicking off your own bubble to cause it to pop.
Burst damage - needs to be toned down across the board. Boost Expertise's damage reduction, and it doesn't effect pve at all.