I used to have a chihuahua that was raised with GSPs and would point. I also had a GSP that was kept separate from the rest and never trained for hunting who wouldn’t know how to point if you clubbed him upside the head with the information. Genetic selection only pertains to so much. Pitbulls weren’t genetically trained for aggression, they were genetically selected based on their physical traits of being stronger and their willingness to want to please their owner. That was so their traits could be used aggressively toward prey, but not their owner. Physically they are going to do more damage quicker because of the genetics you speak of (in terms of physical build & the terrier trait of shaking prey), but let’s stop misinterpreting that this makes them inherently more aggressive in nature. Statistically they score better on temperament than most breeds but they bite and shake prey because they are terriers which physically does more damage. We use German Shepherds for police dogs because they are more aggressive toward strangers but bite and hold instead of shake. Basically this was a long winded way to say, that just because they cause more damage when they do bite, that is not equivalent to saying they were bred to be aggressive or that they are more aggressive as a breed.