It is quite easy to see for the simplest mind that even a .38 Special can be loaded to a higher velocity than a 9mm when fired from similar guns, given the same peak pressure limits.
I had found that the .357 case offers only a little or negligible advantage when compared to .38 Special cases in the shortest barrels when a 35,000 psi peak pressure limit was used. However, these findings were primarily related to jacketed lead bullets of 125 gr. I later found that the .357 case offers a very meaningful advantage when shooting all-copper bullets of 140 gr. or more that are longer for a given mass than lead. I appreciate the performance of the 140 gr. Barnes XPB, but it is even longer than a 158 gr. jacketed or lead bullet, and is certainly not practical in a 9mm case.
It should be obvious the 9mm has no ballistic advantage compared to the .38 Special unless you arbitrarily limit the .38's pressure for the sake of curios, relics and replicas. Where the 9mm does have an advantage is fitting in shorter and narrower grip frames, and double-stacking to increase magazine capacity. I cannot see any advantage in a revolver unless the cylinder was shortened, which I have never seen.