I'll tell you what i have to say,
I start matchmaking by myself, it loads up and always puts me in a losing game! Always, for example, I went for a game of dominion this evening and i got put into a hopeless game. Enemy team was owning out team when i got thrown into it. What the heck guys?!? Same with slayer. I'm quite disgusted. I'd rather wait some extra time to start a new game! FIX IT.