This past week or two I've noticed numerous losses/incompletes in my games list even though my team won and there was no invalid gamestate.
The most recent a couple hours ago here: http://pantheon.demigodthegame.com/game/1133996/player/56980/
It seems that all you have to do for a 100% win ratio (Hi eliminatordemigod) is host the game and frequently alt-tab until everyone kicks you out of the game. Then when you come in 1s later the server will think everyone else dced and give you the win and everyone else the loss because you are the host.
Seems kind of pointless to even track stats if they are so easily fixed.