Brees has a Super Bowl.
Marino has zero & ppl still rank him as one of best ever.
There's been thousands of NFL QB's and plenty with great offensive talent & plenty with lousy defenses, so why havent all of those players had the same success?
Brees has also proven he's not a system.QB & can dominate on more than one team.
That's something we can't say about other top QB's who have been on only one team.
He's also known as one of if not the most accurate passer ever, even by his peers.