After reading those posts in few hrs, according to my high school physics teacher told me that. AEG is totally different with PTW. Such as the "horse power" between the JP car & Eurp. car. Their measurment are totally different(JP's is engine output but Eurp. car is output on the road.
The cylinders of PTW have constant strokes. So it suspose suck more air than AEG(he told me that around 30 to 40% more)
And the structure between AEG & PTW totally DIFFERENT. It's hard to compare......
PS.: I hv both(AEG & PTW only, not JP & Europ. cars, ha ha....)
