I think Activision have given up on this now. In the past week cheater seem to be rampant. Last night we got 2nd to a trio where one dude had 49 kills. We got done by a cheater on 30 kills who then lost to another with 20 (We spectated after death). I hate being that snidey person that claims to die a lot to cheaters but its hard to think otherwise now a lot of the time.