Gel testing does give us a tool for evaluating ammo on a somewhat level playing field. As close to scientific method tests as we have right now....but...
I wonder if the ammo companies are just designing rounds for the greatest WOW effect in gel test videos??? It's a good way to sell magic bullets....

Not bashing the ammo in question, I know zero about it.

If it hits where you aim and works in your gun you're 95% there!