I was one of then who called for his head because come playoff time, his neanderthal approach cost them many, many chances to proceed. How many AFCC home games were lost because opponents stayed alive, and then won it late? Cowher's approach was best against inferior opponents in the regular season. He never adjusted in the big games. To me, Cowher will always be known as one of the best regular season coaches, but also one of the worst playoff coaches.
This pass approach now does work for the most part. Their main problem this year was scoring TD's in the red zone. That's where i believe Arians should throw in more run plays.
Their special teams and D (mostly the secondary) are the huge reason why they are 7-7.