Trent Dilfer won a Super Bowl and Marino didn't. Technically that SB counts for more than every win Marino ever had combined.
I get where PR is coming from with this statement. I know its a sore subject with us Dolphin fans but in any sport the ability (or lack there of) to win a championship accounts for something in most peoples opinions.
Dan Marino aside here, I'll use Warren Moon. The argument that Superbowls determine greatness is an illogical argument no matter who the person using it is. Who is going to say that Trent Dilfer was better than Warren Moon because Trent won a Superbowl? Seriously.....
Superbowls are great to win and really the only thing worth owning in the NFL, but they don't determine how good a player is. Football is a team sport more so than any other.
In baseball a pitcher can get hot and shut down the other team. A pitcher can nearly single handedly win a game.
In Hockey a goalie can get hot and shut down the opponent much the same way as a baseball pitcher.
In Basketball a player can go off and score 50+ points and heavily influence the outcome of the game.
In football there are 22 players on the field and while one guy can be on his game, he doesn't handle the ball/goal for most the game. The quarterback can be precise, but he has to have a receiver to catch the ball, a line to block for him, and a defense to keep the other team from scoring.
So to say that in football championships equal greatness, it's really a ridiculous notion.