And I think you’re fooling yourself if you think that level of distinction as to the enemies they are bred for is significant.
The distinction between dog aggression and people aggression is most important, but so is the distinction between dog aggression and specific prey drive.
Retrievers are VERY aggressive with birds, that's what they're bred for. If you saw my little 43-pound Chocolate Lab confront a live mallard hen, with all her hackles up and every tooth in her head showing, you would think she was a stone cold killer. (Not all Labs will do that, by the way - some will retreat at the first peck in the face. She just closes her eyes and bores in.)
But she is very gentle with my cats and just a melting schmooze with humans.
I have spent over 20 years involved in dogs in a way that most people are not. I have trained my own, I have trained group classes, I have trained privately. I have shown in a number of venues and I have owned 2 pit bulls, altho they are not my breed of choice.
I will pit my general knowledge against yours any day. If you have greater experience than that, please let us know.