Fair enough John, but I would have thought that the delay in introducing power would be specified to simulate the difference between a test pilot who was expecting the stall to occur and a 'real' pilot perhaps, a bit like where they have a certain time between rolling off power and lowering the collective in rotary wing autorotation tests?
The reason I say that is that I've never seen a stall recovery procedure from a flight manual that says to delay the introduction of power - not saying it's never done, just never seen it in the types I've flown.