Popper-Thermosetting is thermosetting. Once the material melts, and the crosslinking of the polymers is complete, the product is cured. I agree their is a difference between hfp and Hi-tech,but since the methodology of curing is is the same for both, it is not the themosetting that differs these two ,but rather the substrates in the formulas that contribute to the hardness and tensile of the coating.If you peruse the MSDS's of various epoxy polymer powders you will see that some use titanium oxides,and others use various iron oxides,some carbon powders. The tensile and the hardness is probably dependent upon the ratio of substrate to polymer, and the molecular makeup after thermosetting.
I would think that supercoat and Hy-teck are purpose formulated epoxy polymers that take into consideration necessary tensile, hardness, lube abilityand temperature ect.
Most of the Powders that I have seen have hardness of between H-2H(20-28 BHN)
I have a comparitor similar to a Cabine Tree that I built, I will test some or the coated bullets.
In closing I think the performance= right powder coating,with a formula that would give adequate hard/tensile