I had an interesting experience yesterday:
I had a pantheon match: in both of the teams a player left, at the end, the other player quit the game too. So my team won, at that point there was no problem.
My oponnent played very nice so I wanted to check his stats, looked at my last game, and then came the suprise: I lost! Not just me, all three of us, except the guy who quited last.
I just posted this too exchange my experience. Nonetheless it was a great game, and I dont care what the stats say, but it is a bug after all.