LeBron is having more points than Kobe right now is because Kobe is sharing the rock now, not like last season, when he hogs the balll. Kobe has better team mates this year, with Gasol and Bynum. You can't deny the fact that the shooting pressure is less for Bryant, so obviously he will take less shots and gain less points.
LeBron, on the other hand, is the only player on his team that can truly play. Cavs are nothing without him. Look at Cavs' record when James is injured. All the pressure is on James, so obviously he has to fight it out in every aspect of the game. Let's say we give Cavs' another good player, James obviously won't have as good stats as he have now.
James will be an excellent player when he's 29. It just depends on how far he goes.

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“The guy said NBA players are one in a million, ... I said, 'Man, look, I'm going to be that one in a million.'”
Kobe Bryant

"I don't need too much. Glamour and all that stuff don't excite me. I am just glad I have the game of basketball in my life."
LeBron James

"People have always doubted whether I was good enough to play this game at this level. I thought I was, and I thought I could be. What other people thought was really always irrelevant to me."
Steve Nash