It's interesting when someone accuses you of hacking, especially if you aren't hacking. It's like "There is no way you could have beat me with out cheating!!".
Lol, I got accused of running hacked mods once in a public drag racing lobby on Forza Motorsport 4. They lost every race because I know how cars work and applied most of that knowledge to a racing sim. So yea, I can relate.
BTW, I am not even close to being the best at the game.
Oh yeah, In World of Tanks someone was hiding beside a building, I literally just drive around the building and shot him in the side, then went back, he said I was hacking because I "Shot him through the building" He couldn't imagine that I had just drove around and he didn't notice.