My class to go is always the Titan, but the winner will always be the one that truly use his/her class as it was intended to be, a Titan attacking someone at long-distance will not be as effective as a Hunter, a Warlock going running and gunning close quartering shotgunning everyone will not be as effective as a Titan, and so on (lol i had no example for the Warlock tbh) If you want to win, you need to master what you have, if you don't like what you have, you won't go anywhere with it.