Sock,
The problem I have with M&S data is that they don't say "why" a particular bad guy stopped after one shot. A low tolerance of pain causing the bad guy to decide to quit and walk home, is much different than his motor functions ceasing and his blood pressure falling to zero.

One of those reasons for stopping is a function of the bullet and its placement, the other is a function of the bad guys state of mind. From what I've seen, M&S data does not take these reasons into account. This raw data isn't exposed. A stop is a stop, reasons are irrelevant. That's my only issue with M&S. Reasons why are relevant.