Only when Lebron is driving do brothers come in and claim that jumping forward straight into a guy, from inside the restricted area, with your off arm on his chest, is "not a foul".
Now, Lebron's body basically didn't react whatsoever to the foul, because he's Lebron. But if someone did that to Steve Black or Rubio, he would have been laid out on the floor. There's no rule, "fouls aren't fouls if you're strong enough to overcome them."