HarryMann full agree, but if the pich up starts with a change in trust, (like in the A340 event....) than it is an accelerated condition, and the bird moves around the Cg
and for a recovery it is a question how much pich-up moment you can take away if you lower the trust to idle, (this is also an accelerated condition...)
but shure in case of af447, if you not longer try to lower the pitch you will not think about the pitch up moment of the engines....
my smal feeling is that the PF wrongly intrusted in one of the lost protections (AoA) and thought it will be ok to hold the stick back, it might be that he had learnd this (wrongly-) skill......