I had one friend currently at level 7 and his current player around 44 or something and mine around 30. He play friendly with me twice and he lost both. he play just 4-4-2. I had evening match happen to meet tough opponent and i set it 4-3MC-2AML-AMR and one striker and all defense arrow to go back and no arrow the rest of the player. I win both game 2-1. This happen in the game, may be this game support Morhino tactic as if you park bus in your defense , you could win 10 skill better team than you if he is unaware of your tactic.
Hope this give you a little idea. and keep on playing
Cheers