The Green Bay Packers won the Brett Favre to the New York Jets trade in 2008. Not only did the Packers receive a conditional fourth-round pick, but Green Bay also took the first step in building a championship team.
The Packers, once Favre retired after the 2007 NFC Championship loss, were ready to move on with 2005 first-round pick Aaron Rodgers as their next franchise quarterback. The Jets, needing a franchise quarterback who could turn the team into a playoff contender, traded for Favre and released starter Chad Pennington who would then sign with the division rival Miami Dolphins.
At the beginning of the 2008 season, the Jets looked like they got what they needed as Favre led the team to an 8-3 start while Rodgers struggled in his first year as a starter and the Packers would finish 6-10.
Things turned in the final five weeks of the season. Favre struggled dealing with numerous injuries, and the Jets bottomed out to a 1-4 finish to end up 9-7. The final blow was bittersweet as the Jets would lose to Pennington and the Dolphins at home, losing the division title.
For the Packers, Rodgers became one of the best quarterbacks in the NFL, leading Green Bay to the playoffs in each of the past five seasons with a Super Bowl 45 victory.
For the Jets, Favre would retire again and then unretire the following year to join the Minnesota Vikings to get revenge on the Packers for letting him go. Jets head coach Eric Mangini was also fired after the season.
With one Super Bowl victory for the Packers and only one season in New York for Favre, give the advantage to Green Bay.