He's not saying Lebron's not a great player. It comes to a point where pointing out his warts gets him lower on the totem pole compared to Jordan and Pippen. Lebron does a lot of great things, there's no question in that.
That's the crap I can't stand about Lebroniacs. If you dare criticize him, you're a hater and denying what a great player he is. I don't think I or anyone else has ever said Lebron isn't a great player. Heck, I think we all agree that he's an all-time great player. He just happens to not stack up very well against guys like MJ, Kobe, Magic, etc. when it comes to winning titles.
He's also passive aggressive in how he handles his teammates which isn't a very good trait for anyone, but especially not a teams undisputed leader.