Titans have the worst supers for pvp. Fist of havok is incredibly overrated because everyone whines and hates getting hit my it. But if you run around searching for any groups of 2 or more to use it on you are going to die a lot. It's better to settle for the "fist of panic" than wait an entire game hoping to get lucky that a group of enemies is standing too close to each other. I'm really good at pvp and have played all classes. Hunters and warlocks present a much better opportunity for success than Titans do.