How come Chris Johnson is not paid as much compared to Reggie Bush...?

..Matt Leinart, Albert Haynesworth, Matthew Stafford, etc. Who really do nothing for their teams and paid better than Johnson, but sit on their ***. I already understand how NFL athletes are overpaid, but come on, at least pay the player whose outperforming records more money who sit on their s all day! Will Chris Johnson get a better contract than his 12 million deal?