I'm 5' 10" and tip the scales at 260. A former weight lifter, I can tie most people into some fairly complicated knots with just my bare hands. Yes, I'm betting I could even do the "tear your arm off and beat you with it" thing to your average Joe citizen.
So yes, a fist fight can most certainly rise to the level or requiring deployment of a pistol in a self defense situation. Especially if you have some 6' + guy sitting on your chest beating your head into the sidewalk...
I agree. So when I walk up to you and punch you in the back of the head (attack you) ....you turn around and start pummeling me, I can shoot you and kill you and get off scott free?
Really? If you say so.