I've watched both play numerous times. They are both amazing athletes and great basketball players.
The majority of statistical comparisons are fairly meaningless. They played in two completely separate eras and the games were different. Also, Jordan did not come straight out of H.S., and he took two years off to pursue baseball. Lastly, his teams were primarily built around defense, therefore he was forced to take on the majority of the scoring responsibilities, whereas, Lebron has almost always had teams with other major scoring threats. Opposing teams routinely were able to devote almost all of their resources to defending Jordan, and, yet, he still managed to dominate.
IMO, Jordan is the best to ever play the game. As was mentioned above, what separated him, beyond his freakish physical ability, was his mental make-up. When he was locked in and determined, his will to win made him almost unstoppable. On top of all that, he was arguably the best defensive player to ever play the game (again, when he was motivated and determined).
The debates will never end. You can throw in Magic, Bird, Wilt, Kareem, Oscar, Kobe, etc., etc., but, to me, Jordan was the pinnacle.