After finding an opponent (Xbox) for 2-player 2v2 Remix, I was matched with probably the worst person playing this game. I mean, honestly, if you can't beat me, you can't beat a single match in the single player, and you should probably return the game. Because I'm awful. 
 
But in the middle of the game, the game stopped. I could still pause and access the Guide, but it just sat there. A few moments later, it said "Connection to opponent lost." 
 
Did my utter suckitude cause a ragequit? I didn't get a Win on my record. It's a shame if this game supports this.

This happened to me, but I did receive a win on my record. It happened after halftime so maybe if the quit before the game doesn't count.

I looked today, and the Win was retroactively added. That's good at least. :)