Most of my losses are from lag outs. First of all, it should give the person who is lagging a warning saying: "Warning you're lagging, close other applications" or something like that. I don't think it's fair that the opposing player is aware that you're lagging, but the person who is actually lagging himself - is not.
Okay so Lag Wins. I'm not to fond of it... but whatever. I think the winner should still receive points for a lag win, however, the loser does not lose any points ; he stays the same. Lag losses does not judge a person's skill.