I'm thinking about a typical one on one game--check it at the top of the key, outside the arc is two points, inside is one, play 'til 16, make it take it. You'd have to have a ref though--I don't trust Jordan with the honor system when it comes to fouls.
Jordan's got the edge on the pull up jumper, but LeBron's athletic enough and big enough to contest it. Jordan's going to have his hands full driving to the hoop with LeBron, who is going to have an easier time against Jordan in the same situation simply because of his physical advantages.
But, you know, Jordan's insane lust for competition and victory makes me lean his way. Nothing against LeBron as a player, but if he can get psyched out by Pierce, KG and Kobe talking smack, I don't think he'd have a very fun time against Jordan. And when LeBron's not having fun, he doesn't seem to play as well as he could.