While I agree with much of what the author said, I have to partially agree and disagree with what he says about larger caliber weapons being preferred. The part I agree with is that bigger holes do more damage and bleed them out faster, the part I disagree with is that he goes too far in debunking the concept of "stopping power".
If you read page 3 (Tactical Realities) you will see that in a real-life situation you will be lucky to actually hit the person you're shooting at. If you do hit the person, you will be blessed with even more luck if you hit him some place where the wound will do enough damage to bleed him out - and a CNS shot will be a miracle. Which means you will have some rounds striking extremities or body shots in places where it's not going to do the kind of damage you want under the big holes-big damage theory.
But in going too far in debunking the myth, I think he ignores the reality. A larger caliber round traveling at a lower velocity will expend a great deal of energy on its target. It's what the author would call "stopping power" in a derogatory way, but it's what I call "I want to lay down and stop trying to hurt you" power.
The FBI paper relies on Fackler's work extensively, but there are many among his peers who say Fackler was exaggerating, wrong, and a poor scientist.
http://arxiv.org/pdf/0803.3053
Simply put, if I know that the odds are against me getting a hit on the CNS core or vital organs, and if I actually hit the target it will likely be on an extremity or a non-deadly torso hit, I still want to accomplish my primary goal - to make the bad guy stop trying to hurt me. A large caliber round at a lower velocity is much more likely to do that. The paper I linked says it much more eloquently, but the way I've thought of it is that a large caliber round to a sold piece of meat is liking hitting someone with a baseball bat. It screws with their nervous system enough that it's like the shock turns all those muscle controlling nerves to "off" or "reset".
The effect is that they lay down and stop trying to hurt me - at least for a moment or two.
All of which means that if I'm holding a 380 in my hand and confronted with a target that I more than likely won't get a kill shot on, I may seriously wonder how hard I can throw that pistol at him.