The only thing that keeps some from saying he was the greatest of all time is his lack of a SB win.
People to this day still question the 72 Phins. I am not one of them, but they say it was a shorter season etc.....
Some don't even believe they were the best team ever lol!!!
However, if Marino had won one ring then nobody could ever question his heart, his statistics or his ring.
Would that have made him the best? That is still a relative question, but a huge consensus would flop and say he was the best.
That is the only reason it is tough for me.
Stbbornly I would choose a ring for Marino. That way I wouldn't have to hear so many people say "Yeah, but he still never won a ring"