There is much more energy exerted on impact with the larger gas engines especialy when your first instinct when you get in trouble is to floor the throttle.
Yes, I get that part. The part I don't get is the frequency of the crashing. If it's due to 3D flying, that makes sense. I guess what it boils down to is, I don't get 3D flying with giant scale. Foamies, yeah. To me, the key word in giant scale is "scale". If the full scale can't do it, the model shouldn't be flown that way. I would no more fly a giant scale Extra or Edge 3D than I would fly a J-3 inverted 2' off the deck. It just looks silly. But that's just me. Whatever trips your trigger.
I guess what it comes down to is we've reached a point in time where building a beautiful scale model and flying it prototyipically (which in the case of something like an Extra 300 flown in competition is a very difficult thing) has become boring. Boring for the person flying it and boring for the person watching it. To me, that's a very, very sad thing.
Mike