Calm, i'm not game programing, just a user to explain.
I remember that the BB is a simulation game to close the reality - not perfect/equal to reality.
So, with this, the official games on league/cup or scrimmage is too the training sessions, causing the train on role position.
Other things ins't perfect like the height not interfer on game run. So a 5'11" player is as good to rebounding as 7'5" if both have same or more level skill.