Yes, but now you are on a whole different topic of recoil and fast vs slow powders. So not going there.
No, that's precisely the same topic.
It's all Gas X or Beano to me, Marketing Hype.
Goodness, I just gave you an article where they mechanically tested this stuff. They weren't relying on computer modeling... they put the dang gun in a ransom rest and measured how much it moved.