The JWT header is the HotShot. They buy them at wholesale (or however) then resell them through JWT. That's all.
And if you want some dyno tests of headers for the SR20DE, get a back issue of SCC I believe it is Dec 99. They did a right up on several different SR20DE headers including the earlier gen HS header, Pacesetter, AEBS, Stillen, etc.
And yes, HS was the best all around for HP and torque in the entire RPM range (low end torque and high end torque). And it is still the best.