But remember too that you must have previously practiced your "draw" sufficently to have made it a "reflex." About the only ones who have the time (or interest) in being that practiced would likely be those without any other line of work.

And the one who draws first just might have practiced enough to make every "draw" the reflexive one. (also a matter of attitude?)

Despite what one sees in the movies, very few people can actually hit much of anything with a handgun when under pressure, except by accident. It takes an incredible amount of practice to make drawing and aiming "instinctive." It's not uncommon to find reports of someone surrounded by a few dozen "cops" who fired several hundred rounds at a criminal without a single "hit."

In a "stand up and face 'em" duel, between "equals" (excluding "gun-for-hire" professional murderers) the most likely real-world result would be that they'd both empty their guns and nobody would be really likely to get hurt.

John