This all goes back to something that was brought up in another thread, that ignorant people (mostly fans of teams that accomplished nothing in those eras) consider anything pre-Super Bowl era or pre-merger to be less significant than what players accomplish today.
Favre has not brought the Packers the number of championships that Bart Starr (5) and Arnie Herber (4) have, and yet everyone considers Favre to be superior because he won one in the modern era. Hell, Herber isn't even mentioned.
Favre's career stats are greater because it is a more pass happy league, modern rules favor QBS, and there are more games in a season. Favre never had to face the challenges that Starr and Herber had to face in eras where violent QB hits were common and DBs could maul recievers to prevent completions.
Favre nutt lovers will continue to argue that Starr only won that many championships because he had Lombardi coaching him and that the running game with Hornung and Taylor was the winning formula. While the running game certainly was a big factor with those two also underated legends, Starr still was still the definition of a clutch QB with many game winning drives and scores to his credit. I've also heard that Hutson (another legend who doesn't get his dues) was what made Herber great, never mind that he won two titles before Hutson showed up.
Favre was all about individual success but when it comes to leading a team to greatness there are many better QBs throughout NFL history.