How is a Level 45 Allowed to Compete in Bronze League?

Maybe he doesn't have too. He could steam roll through all players in any tournament but would willingly lose 2/3 to all his matches to ensure he's still in silver rank. Maybe unlocking certain units should automatically promote you to the next rank, no matter how bad one is at playing. I couldn't watch a terrible mammoth player who is stuck at bronze/silver league. Maybe he gets the mammoth to try and shoot at zone troopers when he should have run them over.