The problem with the Warlock's Nova Bomb and the Titan's Fist of Havoc Super is that they often require enemies to be group up heavily in order to get bang for you buck. This happens quite a bit in the territories gametype we saw in the Alpha, but in practice they are abillities rely more on the mistakes of your opponents than your own personal abillity. On the other hand, the Golden Gun is something that is useful regardless of how bunched up your opponents are, you can feel very clutch if you fire it up in the right position at the right time and use it to kill three different enemy characters.