A world of difference punching holes in paper on the range vs a firefight for your life. Most likely those CCWs who think they will save the day because they have a gun are most likely to get shot by LE or another CCW when they pull out their gun. Simply having a gun does not make you value added.
So for the good guys that's not as sufficient as it would be for a criminal?
I doubt criminals go to classes on SD, but they're just fine doing their deeds.
Sáncte Míchael Archángele, defénde nos in proélio, cóntra nequítiam et insídias diáboli ésto præsídium. Ímperet ílli Déus, súpplices deprecámur: tuque, prínceps milítiæ cæléstis, Sátanam aliósque spíritus malígnos, qui ad perditiónem animárum pervagántur in múndo, divína virtúte, in inférnum detrúde. Ámen