bb74 the bit of your post that is simply wrong was the reference to high wing loading aircraft dropping like a stone when power is removed - it just ain't so.
Admittedly, on its own that inference is incorrect as you say. I omitted the condition of airspeed.
What I believe to be the case is that if you're flying at a speed where there is a lot of induced drag and you close the throttles, especially when the propellers are of the constant-speed variety, then you're going to go down quickly.