You mean like the one the homes in on the target and chases them around? Or how about the warlock AoE grenades that trap and kill anyone near it? The Titans have 1 "usable" grenade in pvp, the magnetic one, which I've seen detach from warlocks all the time that teleport. I'm not saying warlocks are super OP, but given their grenades, self rezzing, shielding punch(easier to use than Titans, teleporting, and heat seeking nuke super that doesn't put you in immediate danger when used like the Titans, I'd say warlocks are pretty well off...certainly not weak.