that's why I said I wasnt discrediting what you have or have not seen. I cannot answer specifically from your situation, but there have been many people killed with a 9mm.
I shoot alot better with my 9mm than I do my .45's
I have 3 1911 style pistols and one Smith M&P 9mm. With the development of SD loads in recent years I would feel completely confident if I were to have to use it in a SD situation.
(hope I never have to, plus I carry a 5.56 pistol in my car most times :kick:)
I do feel that if a new shooter were starting out that it is better to go with a smaller caliber to keep from developing bad habits such as flinching, recoil anticipation, trigger jerk, and overcompensation.