Caliber debates about pistols are worthless

[Bailey Guns]

I also want to point out that you can shoot a head size target effectively and quickly with the proper training and practice.

You forgot the part where the head was moving quickly and shooting back at you. You also forgot the part about the head not having to worry about anything and you having to worry about all sorts of shit.

The way I see it you can Aim and make a quality hit or sling lead in the general direction of your target and hope to get a hit.

The officer was obviously aiming. That's why he got a total of 17 hits on a moving target that was shooting back at him and, at least for a while, behind good cover and/or concealment. He still managed to make 3 head shots on the guy while looking under a car. I'd say that's pretty impressive. Furthermore, almost every reputable instructor or school will teach shooting for the center of the torso when possible. Why? Because it's easier to hit a bigger target than it is a smaller target. Especially a target that, once again, is moving and shooting back at you. You can see it however you want. Almost the entire shooting community on the entire planet sees it differently.

One method is going to produce more consistent results than the other so choose wisely.

Correct. That's why everyone teaches you to initially shoot at the torso when possible. It produces more consistent results.

I think I'll echo jhood's words here and listen to the guy who's been there and done that and survived over the silly musings of a keyboard USPSA commando.