I like the debate about how the 9mm is better due to advanced ammo.
Still can't figure how that can be if you have the exact same ammo for other calibers.
Simple, neither the .40 S&W nor the .45 ACP required any advancement because they were already capable of achieving FBI/IWBA Specifications.
The 9mm Luger on the other hand, required modifications to projectile design in order for it to be able to consistently meet FBI/IWBA Specifications.
No advancements will be made to .40 S&W nor .45 ACP because they aren't necessary, both already perform as well as any handgun cartridge can in their role as duty cartridges, at least within the parameters of modern Ballistics Gel Testing.
That being said, I disagree with the assertion that 9mm Luger is equal to .40 S&W or .45 ACP. While it is true that they perform similarly within the confines of FBI/IWBA Spec Ballistics Gel Testing, Ballistics Gel has it's limitations, and was designed for the specific purpose of being a medium in which consistent, repeatable results could be attained for further analysis. However, it was never designed to be an accurate 1:1 representation of how bullets effect the human body, nor could it considering that the human body is filled with bones, and bones create a variable which renders repeatable results far less likely, especially in individual cases in which differences in density, size, and overall dimensions naturally occur, hence their exclusion in Ballistics Gel Testing.
Unfortunately, there's the rub... Any hunter can tell you that bullets which are greater in mass and weight often result in more dramatic affects against bones. Often causing bones to shatter rather than simply break, and maintaining their trajectory better after they have passed through bones while smaller/lighter bullets often deviate further.
How much of a difference does this make on a human being as opposed to an animal? That I cannot say. However, I recall a certain medical examiner who claimed that in all the autopsies that he had performed, that larger caliber bullets (namely .40 S&W and .45 ACP) yielded substantially more devastating effect on the skeletal structure than 9mm Luger, and subsequently that a lot more bodies came across his autopsy table with .40 S&W or .45 ACP bullets in them than .380 ACP, .38 Special, 9mm Luger, etc. As a footnote, he did say that heavyweight .357 Magnum bullets were also very devastating against bone, but that's he didn't see .357 Magnum nearly as often.
Anyone who wants to read this medical examiner's observations in detail can find them online by searching "Terminal Ballistics as Viewed in a Morgue" in your search engine of choice.
So yeah, to recap, .40 S&W and .45 ACP have not and will not be improved by advancement in the design of Jacketed Hallow Point bullets because they already perform at optimal efficiency within the parameters of modern Ballistics Gel Testing, but such testing has it's limitations, and was never intended to demonstrate how bullets behave within the human body to begin with.
Nobody and I mean nobody was even slightly interested in it. Except of course super low ball scalpers. I finally managed to trade it off to a local gun shop and took a severe beating on the deal. But I was glad just to be rid of the thing. 
