Titans: Shoulder Charge, Fist of Panic, MASSIVE damage grenades Hunters: Throwing Knives, both subclasses have hugely OP PvP supers Warlocks: Annoying self-res, OP grenades on both subclasses and a big melee range. It really depends on the player. Some will abuse cheap tactics and abilities. Oh and everyone forgets that self-res is optional. Not every Sunsinger build has it. And radiant skin doesn't make you SO tanky in PvP that combined enemy fire won't stop you. EDIT: I concede Nothing Manacles+Scatter Grenade is stupidly OP on Voidwalkers.