I see your point, but my concern is that Mularkey seems to have no clue how to manage a game. It would be one thing if there were a few questionable play calls, but consistently he makes baffling decisions. For example, tonight, when Denver was driving at the end of the half and had 3rd and goal with 1:15 left, why not call a time out? Denver wants to run the clock down as much as they can, why do you let them?
On the ensuing drive, why not use a time out rather than rushing to the line and running a QB sneak with 9 seconds left? After calling a time out, why run a draw with no time left?
It's these sorts of decisions that I see week to week that lead me to want Mularkey out. Yes, it shouldn't be change for change's sake, but he is not performing to the basic level of competency I would expect from an NFL head coach. If the guy's the wrong guy, keeping him forever won't lead to better results.