My bad for just skimming the quotes from the article in the OP and not reading the whole article itself. I just couldn't imagine a modern hollowpoint round passing through multiple people (to be fair, the article I believe indicated this was more likely with peripheral hits).

It is interesting that Ayoob states that increasing velocity by 150 fps would solve the problem (I believe this would cause the bullet to mushroom & potentially fragment much more quickly and thus spend its energy on the target body more quickly and effectively--converse to "common sense," of course). I wonder how well their service-issue sidearms would handle that "hotter" load over the long run; I suspect it would be fine, but I haven't looked at any data along those lines in a long, long time.

I personally like the .357 Sig round and know a lot of LEOs looked foward to it as having the approximate stopping power of the .45 but the magazine capacity of the 9mm, but the points made are indeed quite interesting.