LeBron is the best player in the game, no question about it. But there's enough parity in the NBA to prevent the Cavs from winning it all. The Celtics are still the team to beat in the East, IMO. The Magic are a very good team. But if Nelson opts for season-ending surgery, they're finished for all intents and purposes.
The Lakers are looking impressive, after beating the Celtics at home and the Cavs at home. When Bynum comes back, look out. I don't know if they contained LeBron today or if it was just him not being able to finish at the rim. Either way, though, he did not play well.
I'm almost 100% sure the Lakers will be back in the championship. Can't say the same for the Cavs because they still have the Celtics to contend with.