Whenever he's posting up, his defender almost always put two hands on his back, which is an automatic foul according to the rule book. How often or do you ever see whistle blowing on such plays?
Shaq was almost unstoppable in the paint, so his defenders always held him or karate-chopped his arms to "defend", Shaq wasn't getting all the calls he was entitled to. But Shaq also threw a lot of elbows, which weren't always called by the refs.
Just like Shaq, LBJ is very hard to officiate, more than often, his defenders were given big man defense treatment.
Sure, LBJ walks, pushes, and whines. But this is NBA, who doesn't?