If your benchmark for greatness is Brady, its going to be a REALLY short list. Only one even close with rings is Montana and he's about to get lapped.
Mahomes likely has a long career ahead of him and he's off to a hell of a start.
Don't fall into the pit of dumb fugk.
There is a LONG list of great QB's in the NFL and there is a LONG list of flashes in the pan.
Mamones will be a flash in the pan.
