Lebron does not have that killer instinct to beat his opponent like Jordan and Kobe have. Jordan would've run over his kid to beat his opponent. Kobe is the same. You either have it as a player or you don't. Lebron does not possess this intangible.
Lebron is like a superstar facilitator. Instead of wanting to be the lead dog, he'd rather exploit all of his all-around talents in order to make his teammates better. Too much goofing off with his teammates, too much of that 'family' vibe amongst his teammates. Jordan was never like that which is why it blows my mind that Pippen made the comments that he did about Lebron. Without Jordan, Pippen doesn't have 6 rings.
Jordan was an assassin on the court. To defeat you by any means possible. That's why I don't think its a sure thing that Lebron is going to win multiple championships, let alone one. He's already 0-2 in NBA finals.