You always hear the argument that "..pitbulls are used in hunting all the time, hence they have good noses.."
They DO NOT have good noses. Pitbulls do work well with other dogs, and they are used for hunting hogs when there are good scent dogs (Walkers, redbones, etc.) running with them. A good pair of hog-hunting pitbulls will run at the back of the pack and follow the "nose" dogs until they see the hog. Then, the nose dogs will back off and let those pits do what they do best. I've seen two pits head-and-heel hogs that weighed in at 400 lbs or better.
I have no doubt that the pits destroyed 400lb. feral hogs. They were bred for “Bull-baiting” (killing bulls for entertainment) before having terrier stock added for pit-fighting use. They kill much livestock every year.
I have been told that “pit bulls are used in hunting all the time”. The Dogo Argentinos who mauled one of their owners in San Fransisco ( a large scale breeding operation in a residential neighborhood) last month are also listed as “hunting dogs”.
I believe that I have mentioned on another thread that the hunting of feral hogs is the only legitimate legal use for pit bulls that I have found, and that they are, as you say, very good at it.
I have also been told anecdotally that some hounds are about the only breed-type that can take a pit bull down.
But hounds do not have the genetic deficiencies that the pit bull breeders have selected for. And that genetic “deficiency” is an item that has been bred OUT. It has been removed. It cannot be bred back IN.
Hence the breed problem.