Getting Peyton certainly wasn't a raw deal. What is your point with Warner? Warner had been the starter at times in Arizona, and was mediocre for 2 years before Whisenhunt got there. You act like the Cardinals didn't turn it around. His other QBs are lucky to find spots on rosters these days. And FWIW, his teams without Warner were mostly competitive. Chip Kelly took over in a winning organization. Lets see if he can build on it. A number of coaches have seen turnarounds in year 1, but then started to see things go bad.
But getting fired essentially because arguably the best QB in the league happened to get injured is. Very tough to win without a QB in this league and the Colts had nothing behind Manning.
They were 10-6 in a crappy division the year before with Manning, which was their worst record since 2002 when they also went 10-6. He completely failed as a HC in college.