So for zerker everyone basicially runs the same, firestorm, wild leap, <insert skill you wont use here>, battle frenzy for pvp and if you take hits or shout if you need aoe cc. The only debate ever is thirst for blood vs uncontrollable rage. Thirst for blood will 100% do a lot more damage. So for group pve it is extremely good. Also if the area is weak for you and you want to steamroll its very good. I find uncontrollable rage better for tough content as the reflect and double fracture is nice. Uncrontollable rage, IMO is the only ability you should use in pvp. Not only can you make plays by reflecting damage back as people try to focus you, zerker has the 300% shield shredding talent that goes off of fracture. Back to back fractures at a 300% buff makes shields irrelevant. Let me know if anyone is doing well with thirst for blood in pvp. I feel way to squishy using it.