There's things Calvin Johnson does that nobody else can do. He's obviously huge, his physical attributes outweigh just about everyone in the league. But on top of that, he still has the ability to learn. He's like a sponge and soaks up anything that can help him as an athlete, as a person. On top of that, he's not soft. He catches the ball and tries to get upfield to score. He doesn't slide or go out of bounds. That's a rare find in the NFL.