I still think SnD unlimited its way faster, and doing SnD unlimited, you can Spawn kill by using your own custom Gametype, with the Xp glitch you have to go by the settings they offer you, which means u have to keep press SQUARE on your other controller to avoid the killcam.
true but i think the XP scale is messed up...im sure a 3,000 score cant raise you 14 levels...hmm these questions haunt me...