So, I took a look at the linked video, as far as the case drawing, which I found interesting.
and it also explains to a degree why it needs high pressure to deliver what I consider adequate but not outstanding results.
First, the COAL of the round, is the same as the 9mm Luger, !.169" The drawing shows a very tapered bullet with a very large flat point at the max length. Clearly this length was chosen to fit in 9mm frame size guns.
Otherwise, the case is straight with a slight taper, and approximately .30 cal, so smaller in diameter than 9mm or any of the other common larger caliber rounds. And, while the case is 0.07" longer than the 9mm Luger, its also about the same amount shorter than the .38 Super or the .45ACP.
And, as to women or smaller individuals shooting it from compact guns (assuming there are compacts to handle the pressures) NOTHING pushing a 100gr bullet at 1200fps is "light recoil" or pleasant to shoot from a compact size pistol. Not a 9mm or a .30 or anything, that's just a matter of basic mass and energy.
So I feel marketing claims about how the smaller bore size round would benefit women etc, I think that's just market hype.
I think that if a 1200fps 100gr 9mm is a vicious little beast in a compact gun, a .30 cal shooting the same weight bullet at the same speed will be, as well.
Putting a lot of lead in the air often wins in military combat but self defense shooting is a different matter, and while only hits count and only good hits matter, the civilian is legally responsible for ever round they fire. And that includes what and who ever gets hit.
If the round is a snappy little beast many people simply won't practice, and if you don't practice, you don't get good and real world shootings show that even good shots often aren't such good shots when faced with a life or death situation.
All in all, I'm going to pass on this new "wonder round" and just wonder...why??
(other than the profit motive, of course...)