Don't get me wrong, I was just expounding on your point really. There is no question that the 230 grain .45 ACP packs more momentum and does more damage than the 115 grain 9mm Parabellum. Given equal placement. It would be the one I would prefer too, in a one shot affair.
On the spectrum of pistol cartridges, that are classified as service cartridges, the 9mm is on the bottom rung. That is to say, it defines the lower margin of acceptability. Acceptable, is acceptable though in a go, no go test and the 9mm Parabellum is an adequately preforming Military and Police cartridge, no question.
"No free man shall ever be debarred the use of arms."- Thomas Jefferson