In the past Lebron has been a superstar... on teams that weren't really expected to win the NBA Tittle. Anything he did was going to be good enough because he was an underdog. Early on it was because he was young and his team was weak. Recently it was because he was "all alone".
But now since he joined Miami, James is on the favored team. It is win or bust.
He is not Batman.
He is not even Robin.
Lebron is Robin's son.