All this talk about whether Rowett would be good enough if he got them up/at the next level is so much rot.
Or as my old mother would have said: "Let me fall before you catch me".
It used to be that you had to fail before you got sacked.
Now it doesn't matter how successful you've been to date, if someone thinks you might not continue to be successful in future, you get sacked anyway.
Meanwhile, as I always like to remind people in such situations, Sir Alex Ferguson was six full seasons at Man U before he won the League. And he had come to OT with a good CV, to inherit a squad which was still pretty decent, and with money to spend to add to it.
As for Brum, why couldn't they have sacked Rowett before they played us?