Adrian Peterson: Tore 2 ligaments and the meniscus in his knee week 16, PUSHED himself to make week 1 the next season. In that season, he had 1016 yards... AFTER CONTACT. Coming off of that injury, had the 2nd most yards rushing, EVER, vs a 9 man front almost every play because his QB can't throw.
Peyton Manning: 3 or 4 neck surgeries, sits out a year. Joins a team that went to the playoffs with a QB as starter who could not take the starting role from MARK SANCHEZ the next season. Peyton Manning was sacked 21 times, 2nd fewest among any QB who started all 16 games, and less than 5 QB's who didn't start more than 10 games.
Peterson deserves the comeback player of the year award, all Manning had to do was stand around all day and throw the ball. Manning took a playoff team back to the playoffs, Peterson took a mostly unchanged 3-13 team to the playoffs the next year all by himself.