Maybe true, but the subject of M&S is the stopping power of certain calibers. Why a person stopped should mean a great deal to the study in order to keep the playing field level. He may have stopped for a reason totally independent of what caliber he was hit with.

Person "A" being stopped with a .22 LR hit to the arm because he has a low pain threshold counts the same as Person "B" who takes a .45 ACP to the brain stem is a bean counter approach. They both stopped after one shot, same-same -- not quite.

Consider that a .22 to the brain stem would have stopped either "A" or "B". .45 to the arm may not have stopped "B", let's say it didn't ("B" has a high pain threshold or is on drugs). So what can be gleaned from those results? Obviously a .22 has more stopping power than a .45ACP. Does that make sense? That is why, "why did he stop?" is relevant.

I would prefer a caliber and shot placement that didn't require a weak mindset on the bad guy's part to work.

$.02 -- I don't get paid by a gun rag to make this stuff up.