While the Denver defense didn't play up to it's highest potential, holding a top five NFL scoring offense to 24 points is hardly doing a bad job overall. Then add the fact that the running game was effective for the Broncos, and I'm not sure who else to blame for that loss. That wasn't about carrying a team on his back, that was about being completely unable to pull his own weight. If this was an isolated incident, I would blame age, injury, etc. But this happens far too often in the playoffs for Manning. He is the problem, for whatever reason. I think it's leadership. His teammates have no reason to put it all on the line for him.