They are working on a different principle which is basically a force which is more than the weight they arn't really flying its more brute force and Newtons laws with force vectors.
I am not saying it will be a positive pitch forward it will just be a reduction. The citation might very well need a ball hair where as others need a hefty fist full but it still needs it.
The Statement you can power out of a stall is miss leading you don't actually if the wing is stall all you do is convert all the power into tubulance.
BUt if you say stall at 30degs nose up and I mean stall not when something starts bitching at you. If you maintain that 30deg attitude you can chuck as much power out the back as you like you won't unstall it.
If you have enough power to balance on your tail and start forgetting about aerodynamics and start using Newton to remain in the air you may well be able to accelerate away which will then change the AoA which will unstall the wing.
Now incipent stall your not stalled so you don't need to do anything positive because the wing is still flying. If you have enough power to dig yourself out of the dirty side of the curve crack on but that is a completely different situation to the wing being above the critical angle of attack. Most planes don't have enough power to dig themselves out of the dirty side so they pitch to get into a energy state that they can.
Comparing what's happen and the reasons for doing things between fully stalled with the wing over crit AoA and incipent with the wing unstalled is like comparing chalk and cheese.