http://en.wikipedia.org/wiki/1984_Miami_Dolphins_season
The rules give receivers more flexibility at the present time. Take a look at this roster. I liked Jim Jensen's versatility and the "Marks Brothers" were one of my favorite combination and this team still managed to go 14-2.
If this was Brees's team, he wouldn't be nearly as good. If this was Peyton Manning's team, he wouldn't be as good either. If this was Tom Brady's team, it would be close but still not as good. Marino never had a running game. Brady and Manning both had running games on their better teams.
Marino always gets disrespected. His mobility sucked but other than that, I would take him over guys like Elway. DID DAN MARINO HAVE TERRELL DAVIS TO HAND THE BALL TO IN ORDER TO WIN 2 SUPER BOWLS? No way. Terrell Davis got Elway those rings