Recently on XBL i ran in to a bunch of cheaters, it was 2 clans of cheaters. They were all like 50's or 49's or 48's etc in slayer. Then i looked at their stats and games played, and all the slayer games were unreliable. You can see for yourself. Checkout these account names...
xJoE iZ FeArEdx
OMG itz Suited
BxRxxMudslinger
xxxbonghitterxx
KxD Infamy