Ever wonder why you suddenly suck at the game?

Yea i know when someone is hacking by their report card before game start. One dude with 833 headshots.. Yea right. If it was kills i'd believe it. People have a lot of time to just play this non stop but to get over 800 in two weeks? I don't think Shroud or Ninja could pull that off. Same with people pulling off crazy shots that just make no sense when you still got armor and their just "blind firing" and getting you through smoke. Sucks too cause this is the better BR game and i've come to liking it but not for long if this becomes the norm.