ORIGINAL: Tall Paul
In addition to Gee Bees, add T-6s, A-26s, P-38s, Mosquitos, Comets, P-40s... all are poor fliers at best, and short-lived. Seldom see one a year old.
High wing loadings demand a lot of expertise, especially when landing. Any attempt to 3-point usually tip-stalls the poor thing.
I has spoke!
AT-6's bad flying models? well... I yes if you load it down with the fiberglass finish and 17 coats of paint for a detailed scale model it would be. But its a model of a TRAINER... trainers generally are forgiving. RC models of trainers tend to fly as per the full scale if not overweight.
There's the key... don't get it too heavy. Even a P-51 (notorious for being hard to fly as a scale model, worse than the P-40) can be tamed by keeping the weight down.
Yes, you mention high wing loading... but they DON'T have to be heavy.