Peetzakilla,
I guess your inital reply threw me off. You mentioned that one would have to show they were in danger of serious injury or death. I think the danger is pretty clear, considering the scenario was that a guy was committing Aggravated Robbery (display and/or use of a deadly weapon during the commission of Robbery). So...I guess we actually agree???
I only made the Crime Against a Person vs. Property Crime to distuingish the difference between someone stealing your car and someone robbing you of your car at gunpoint...which are two different things altogether. You'd be more apt to use Deadly Force to prevent the Aggravated Robbery than you would the "Car Theft" (which is a property crime...although in some states you can use deadly force to prevent just that.) Some people get "car theft" and "carjacking" confused.
Maybe I am completely missing your point (entirely possible) and it is not my intent to be argumentative. Feel free to call me on it if I ever come across that way.