disel engines dont rev out very high and most have really big turbos, they put out alot of torque and are fairly effecient. so if 2 engines, one gas and one desil of the same size displacement, were tested then the desil would have more low end torque and gas would have better top end because gas engines can easily rev to 6-8 thousand rpms while a typical desil can rev to about 4000 or so. you also have to take into consideration that most desils have turbos, so thats where they get alot of there hp.

billyman- id also like to know what program this is, i could spend years messing with it.