I don't know about the report or its conclusions, but Continental's post is well-written

Rounds fired in a semi-vs-revolver is one of those things you could argue about endlessly without ever coming to a decent conclusion. There are simply too many variables in-play.

Pick something you like, that you're going to carry, that fits with the way you're going to carry and preferably that you also don't suck out loud with. If you know you're not going to shoot it often or make much of an effort to carry/conceal it, the J-frame fits the bill. That's not a knock on its performance, just a statement of its strengths. Likewise, the semiauto offers easier reloading and (generally) higher capacity, but you have to make an effort to employ it properly.