Since the past(beta phase 1) i have been thinking about the 'favored' indication as a result of MMR. But after season 3 came out, seeing situations like this make me change my opinion.
As you can see, this was take out of one of my friends profile and he is not the only one who has profile like this. He is a high master player who has beaten + got matched with several GM before (he has beaten dayvie for example). The people he is getting matched with are not gm at all, those are 1k5 1k6 master last season aka. mid master players.
Now if favored system is a result of MMR, all of these should get closer and closer to +- 10 points each game. I think this mean that blizzard is trying to use the favored system as a tool to increase the speed of points differential on ladder therefore easier to test out their mmr system...
I know this sounds dumb but all these make sense in my head and i decided to make a blog about it =_=