The stakes are high but we still don't know what Peyton has in store for us all. But I do believe that he can bring again the Colts to the Superbowl if his performance will be the same, if not improved.
That's what I think will be the biggest deciding factor. Even if Peyton plays excellent all season, he's still gonna depend heavily on his teammates. They screw up? He's gonna be dragged right down alongside them. That's why teamwork is so important.