I'll give you the stall thing, I fly the 152 a lot. But what can you do coming over the top that you can't do with proper throttle control? Easier, maybe, but I don't see what you can do that you absolutely can't without killing the throttle?
Wiley.
Been a while since I flew but from memory, try a vertical rudder turn to the right in a P51 or F4U on the edge of the stall. With engine on you will struggle to get it turned and usually wallow back over to the left then fight for control. With engine off the nose will drop down very nicely and you can maintain control.
Worth noting that usually these sorts of things are done when trying to rope and opponent who is close to your E state and usually within firing range. He will be fighting the stall as well. With engine off not only do you make the turn but you are also then only closing the gap with gravity and not dragged down by engine power.
This point is also pertinent when considering the time it takes to restart the engine and get the use of the throttle again. Under these conditions the restart time is not a factor and you have plenty of time before you need that throttle again. If that is not the case then the situation you are in is not one where engine off is the correct choice. Example, a second con is in play. In those situations, do not go to absolute stall, do not try to rudder right at the top and do not cut your engine.
ps. Turning auto trim off in this situation is highly beneficial as well.