Similar to the earlier discussion regarding the lack of an empirical difference between various handgun cartridges, it's difficult to establish any link between training and successfully defending yourself with a handgun. If John Lott is to be believed, ordinary folks thwart bad guys some 2-million times per year.
If all those folks prove anything, it's the importance of having a gun and the will to use it. Everything else is guessing.
Forgive me my nonsense, as I also forgive the nonsense of those that think they talk sense. Robert Frost
