I've read a lot of such research projects and test. Differant people getting differant results with pretty much the same equipment.
Also I did a bit of CSI, attending serveral autopsys. I've come to the conclusion that no bullet is gonna react the same every time. I've seen bodys shot with the same ammo, from the same gun (mutipal gun shot wouds), hitting near the same spot, with competely differant results. I've seen a gun live after being shot with a 44 mag in the chest, I've seen a woman die after being gut shot with a 22.
No two people are built the same, (some fat and soft, some hard, some skinney, all wearing differant clothing).
The moral of the story, pick your round and hope for the best.
Like I've said, I;ve read a lot of differant test. The most interesting is from Col. La Garde's book, GUNSHOT INJURRIES.
Col. La Garde & Col Thompson (inventor of the Thompson machine gun), we taste with conducting test after the War Dept, discovered the Army .38 cal. preformed unsatisfactory.
Col La Grande used bodies, cadavers, beeves, and horses. (Also studies gun shot wounds from firing squads in South America, guess that wouldnt have been too PC in this country0.
Interesting but no real conclusions except no bullet reacts the same way all the time.
Another interesting read is P.O. Ackley. He was pushing the high velocity theory. Ackley used donkeys showing the effects of high velocity light weight bullets vs. heavy slow bullets.
Again a good read.
Often test results are pre-determined, depending on the opinions of the tester.
An example: When I'm working with kids, I like to show them the dangers of firarms. I like to take my 204 ruger and shoot a gal. jug full of water. Because of extreme velocity the jug/water turns to vapor. Cant get the same results with, lets say, a 45-70, which just seems to push the jug off the fence post. Is that to say I'd take the 204 Elk hunting, Not likely, but the 204 vs water jug proved my point, it impressed the kids. The see that bullets in real life arnt like bullets on TV. Another example is a Black Hills 125 grn +p opens up pretty good on phone books out of my 6 in. Model 27, they dont open up worth a hoot out of my 642. So if I'm hunting phone books the Model 27 will be my go to revolver.
So me, I'll stick to my SWCs out of my 642, not because its the best, but because its the best I've found that fits in my pocket. I'm not the smartest guy in the world but I know, that if I figured I was gonna get in a gun fight (which at my age is highly unlikely) I'm gonna take a rifle. Since I doubt I will I'll keep my 642 in my pocket.
I live in a relatively crime free area, if I get in a gun fight its gonna be with rattlers trying to occupy the same area as my grand kids, or pop a cotton tail for the camp pot, both cases can be taken care of with my 642 & SWCs.
But dont stop studying Gun shoot wounds, stopping power, etc, its fun, entertaining reading. None of us are too old to learn, and reading beats the heck out of the Boob Tube.