I suppose many profile planes are designed for 3D flying: lots of thrust, light weight, large control surfaces. (easy to fix after you crash while hovering at low altitude...)

Fun Fly has been a pretty vague concept for me, but from Scars description I realised why I had trouble separating those planes from 3D planes: controllability at low speeds seems to be an advantage in both. Many 3D planes have very deep fuselages for knife edge flight but that does not seem such a high priority for Fun Fly