so MJ backing down little ass John Starks is supposed to make me conclude that he could bust Bron's ass with his back to the basket? Right.
I think it would be a close game between MJ and Bron. I could see MJ winning if he got hot, because he routinely hit some unguardable shots, it's just a matter of whether they're going in that day or not. Bron is strong as shyt though, even for MJ, and he'd be able to get into the paint at will. His jumper has improved too, and he'd be able to get his shot up over MJ any time he liked.
prime MJ would beat prime Kobe fairly easily. Prime MJ was significantly stronger than Kobe and his first step was deadly. Kobe doesn't have the length to recover like Bron does. Plus, for MJ on D, it would be like guarding a bootleg, less effective version of himself, so I doubt he'd have trouble there. He'd also be able to keep Kobe from just backing him down, so Kobe would have to rely almost solely on his J. Again, it's a matter of whether he was on fire or not that particular day, but Jordan beats him more times than not.