Well, if I see the match is pointless to continue and my teammates won't concede, I exit, sure enough. Why not? The opposing team still gets the win, I just don't waste my time and energy playing a lost game. That happened a lot in Epoch IV, with a lot of semi-noob games, that are rather unpredictable.
Oh, and regarding achievements. You, on the other hand, are mainly known for two: (1) being the shameless stats whore -- I've never seen you play on a team with worse stats; (2) trying your ages-old BotF+Shield trick on experienced players and dying match after match after match.
Neither achievement compliments your intellectual capabilities, nor does this post, if you ask me (: