Champions opponent quits I get no win...

Second time it happens while they're loosing.  It also happened once when they were winning, w/20 minutes left and me dominating, they quit, it says game under review and I get a loss. Shouldn't that have not counted.  Rewarding people who know how to trick the system makes the game much less enjoyable and the user experience very crappy.  It caused me to rage quit for the first time in my next game :(