There is no question the DA is lighter, and more powerful, than the G62. My question is why. You would think the larger CC engine would produce more power. The ignition timing of the engine can't be the reason. Full power, they are both at full advance. I'm guessing that it must be a porting, or carb answer. It could also be interal friction. If that is the answer, why doesn't Zenoah change this problem?