There are a few key differences between Marino and Elway. Elway has rings, Marino doesn't. Elway has ran a successful front office, Marino hasn't. Marino is a talking head on a CBS Sunday show, Elway is not. Marino talks, Elway takes action.
And Rich Gannon, who for all intent purposes, doesn't really belong in the same conversation....gets to commentate a few games on any given Sunday.