That's why I don't do multiplayer games anymore.  Cheat-Assholes...  As far as I can tell now, multiplayer games are either wiping out newbies or competing to see who can use or memorize their cheat program best..

I wouldn't declare that they're cheating without first seeing evidence of it.  Mostly, they're just far more experienced and familiar with the game mechanics so of course they perform much better.