The Airbus technique mentioned above grew out of the AF447 accident. In simple terms, having only 'practiced' stalls in the simulator at relatively low level with sufficient power to accelerate out of the stall, the F/O applied TOGA thrust and expected the aircraft to accelerate. At high altitude, with little relative additional thrust (and with the added impact of raising not lowering the nose for other reasons) the aircraft remained deeply stalled. Thus the revised Airbus technique became "Nose Down Pitch Control…..Apply, Bank…….Wings level" until the stall indications cease, before you do anything else - including adding thrust.