You guys are really, really right on. I've read stuff in magazines and (especially) all over the internet, usually really slamming Marshall or Fackler. It can get pretty vicious. It's so silly, and so needless.
Some stuff each of them says makes sense to me. Boils down to whether you like big and slow or fast and little. Regardless, I wouldn't want to be shot with ANYTHING, even things both Fackler and Marshall would agree were very poor stoppers.
There is no perfect way to conclusively determine stopping power. Period.
Bullet placement matters more than caliber or ammo, and a handgun isn't something you really ought to put a lot of faith in when it comes to stopping determined attackers anyway. I think Both Marshall and Fackler would agree with that, by the way.
My two cents' worth.