I have record my last 50 battles and take notes about how many red,orange,blue and green players in both teams.
Test it in tier 7 8 10 tanks.
It seems like in my last 50 battles, i am a little bit lucky that to have less red in my team. It`s also shows that MM never select players just throw 30 players to fight each other no matter good or bad. It`s also indicates that good team usually win.