I have owned the DP Extra with a gas BME 44 swinging a 20x10 Mezjlik prop. I also have the the DP Edge with a glow MOKI 1.8 turning a 19x9 mezjlik. The gas plane weighed in the high 15lb range. The glow plane weighs in the low 14's.

Truly, engine performance is about the same. I think the glow engine edges out the gas on throttle response.