I haven't checked your stats but maybe it's because you have a high kd ratio/trueskill level as opposed to the rest of the lobby. I have the same problem where I get all the scrubs in the lobby on my team and all the decent/avrg players are on the other team, and we end up getting -blam!-. I have come to the conclusion that their idea of balancing a lobby is putting the best player alongside the players that are complete shit, making it so that the best player has to have a game free of mistakes and has to carry his team otherwise they won't even come close to winning. It sucks because I play solo a lot and end up being put in stupidly unbalanced games.