Gracie Jiu-Jitsu.. Duhh!
No, not really. I don't think that there is really a style that is better than all others. It also depends on if you have perfected it, I think. Like if you have perfected Wu Shu, that's probably all you need. Still, somebody may have the best Wu Shu, they may only move a couple of steps back if hit by a Muay Thai kick or a Karate punch but they could be choked out by a Jiu-Jitsu monkey. So certain styles effect others. Just like in Pokemon! Squirtle can beat Charmander but he gets beat my Bulbasaur. But then, Charmander can beat Bulbasaur.