It really comes down to the Reynolds numbers, that is why giant scale platforms work so well compared to the little stuff, the wing loading can be equally heavy on both small scale and giant scale but the small scale will fly like a brick with nasty unforgiving habits and the giant will fly like a home sick angel that is inspiring to fly. Again this is because of the effects of the Reynolds numbers and cubed loading. The larger the platform, the more efficiently it will carry weight and because of the larger platform, there is now better damping in flight giving much better scale effect. Even the very best of warbird pilots will struggle with making a small scale platform look realistic and smooth in the air, and as always, proper setup is always going to be essential on large or small aircraft.

Bob