Before the season started, I looked at the Colts roster and concluded it was a little better than in 2009. Obviously, the team finished 4 games worse. Let's see where and why.
Quarterbacks: Manning had a very similar year in 2010 to his 2009 season. In some ways, it was an incredible season especially given the context. However, there's also no way around the fact that the Colts dropped games they would have won if Manning had played better. The biggest difference between 2009 and 2010 is that Manning made EVERY clutch play in 2009, and 2010 he left at least three wins on the table (Philly, NE, Dallas). Granted, we didn't see Painter this year, so I guess that's a plus.
Result: WORSE (slightly)