you should look at their offensive consistency, really helps to now why some guys can play amazing one game yet terrible in another.
I used to play strictly myleague and didn't touch online cause of the cheese. Myleague is easier to play and learn the game and you get different defensive match ups every game rather than trying to beat one team in domination. The default offensive is pretty bad for spacing too, you could play around to find what offense set is best for you. imo myleague is way better to play the game than myteam domination mode.