This means that you can start with X or Y formation, and that once the match starts, the game decides a scenario in your favour or against, and what matter more is to have the control under this scenario (if you can lol).
I have a 9 and a 10* players and Im having troubles this season to win -30%'s and -40%, with the same way to play as always... maybe the game just decided that this season I'm not favourite in any place lol