I tied but still had edge in matchup ratings.
However if you played man to man your best defender would have been on him most likely 70-80% of the time and he would have scored a lot less points.
There is still help defense in man to man, i.e., a guard drives past his man and someone else picks up on him. For example I''ve noticed in the game logs times where a PG shoots and my PF or C is guarding the shot in man to man.