high kd and spm impresses me more, high kd low spm means they're trash though. spm is what impresses me the most i'd say.
w/l is highly subjective to party play which everyone does differently
i mean i could set up a 8 man party, and invite someone who's never played cod before, they'll have a 100% win rate, but does it really mean anything
Scuf controller. Pretty much explains its all, however if you do not feel like forking out the dough to buy it. You can pretty much learn how to jump shot without it. But mind you it will take a ton of practice and time to master it completely.