Except that Manning was off his team last year...and that team still won their division and made the playoffs...and won a game in the playoffs. So based on that, how valuable is he really to his team? Take AD away from the Vikings and what would they be? Maaaybe a 4, 5 win team, tops. The way they'll finish, you could argue he alone has provided them with those extra wins to get to 8-8, 9-7, or 10-6. That's pretty damn valuable! It's not his fault his QB and team suck.
I think a comparison can be made with the Heisman Trophy-- if Te'o couldn't win it this year, then when will a pure defensive player ever win the award? And perhaps the award really should just be re-named the Best Offensive Player Award. Maybe the NFL MVP should just be renamed the Best QB on a Playoff Team Award?
Peyton is playing with FUSED VETERBRAE in his NECK. He is playing with his LIFE honestly. AP is playing with an injury that is career-threatening, not potentially LIFE THREATENING.
If there can be another year in which Peyton shares the NFL MVP with someone then this might be the year.