Because it is Picco made and did lose almost the whole concept exept the crankshaft I can imagine the engine is also more Picco timed and so less RPM and more power.
Last weekend in the Dutch nationals there was a Orion CRF .21 onroad driven by Kyosho driver Ilia v. Gastel. It was not the fastest engine on the track but he made a top 4 qualifier. In the final he broke his engine, I do not know what hapened but regarding the quality at this moment of the Picco engines I think it is no sign others will follow.