1. Mahomes sat his first year for all except 1 game.
2. Nobody has had a Mahomes like rookie year.
3. Only Tom Brady and Peyton Manning have had any season better than Mahomes' last season.
I'm criticizing Jones for not having a Mahomes-like year. I'm just saying that if he did it would have been a safe bet that he's a franchise QB. As such, as with 99.9% of QBs of all time we still don't know.