Lebron is not the best player in the league. Not even close. This isn't 2014 anymore. He's going to be 35 at the beginning of the season. He's a complete liability on defense and he's going to become worse and worse, the older and the slower he gets.
Lebron is at a point where Gronk was last year. Still capable of great plays and contributing to a good team but the days he could carry a team are over. The Lakers couldn't the sniff the playoffs this year, lost a couple of starters, Lebron will be a year older and added AD. That doesn't make them contenders. If they add a third piece like Kemba or Butler, the picture changes. As of right now, they're not.