No, I don't think so. Dan is usually considered the best passer of all time, but usually is a couple spots down when people talk about the greatest qb's ever. Jimmy said Bradshaw 'cuz he sits next to him on the show and Montana because Montana is consistently put forth as one of, if not the, best ever(Montana says Marino would've done more than him if they had switched teams). The thing about the SB ring was just saying he's done that, so it's not a reason for him to stay.