I based it on playing Peja in a Hornets association. The pull-up animation is a bit slow, specifically when he gathers for the shot or the transition from dribbling to shooting. It's slow, the only thing preventing Peja from being blocked/stripped in the game is his height and quick release.
I gave those examples because those are the ones that show Jordan has a quick pull-up.
The speed of the shot/animation affects gameplay significantly, and we don't want to end up with an accurate looking shot but screws up gameplay or how Jordan 'plays'.
That statement even applies to terrybgood's editing of the shot.