I've built the CMP Zero and Folk-Wulf. They certainly look more scale than other OEM's ARF offering of my knowledge. I haven't seen the Mustang 140 in real life. But judging from the picture on CMP website, the paint on CMP ARF's appeals more to me than the plastic film covering on other ARF's. But hey, I am no expert on scale dimension anyway, so I couldn't tell if a fat or thin Mustang is closer to scale. I shouldn't even be speaking on this subject, since I am so into profile fun fly planes. Now, that's real stand-OFF scale.