I played the old games with sticks because it worked better, and while it was less so in Round 4 (after they patched in button support), there is no reason to use the stick in Fight Night Champion. No analog stick gestures, or used for blocking, or anything. All it seems to be now is six directions with each correlating to actions on the face buttons. Unless you're incapable of pressing A and X or Y and B at the same time, buttons are the better option here.