How every team that lost the Super Bowl since the 2000 regular season did the next year
The results have not been great for teams that have lost the Super Bowl in their following seasons.
Steelers XLV
Mike Tomlin and the Steelers went 12-4 and won the AFC North in 2010. They downed the Ravens and Jets in the playoffs before falling to the Packers in the Super Bowl. They went 12-4 again in 2011 and lost in the playoffs when Tim Tebow found Demaryius Thomas in the Wild-Card round in overtime.