Noses are a funny thing, I saw years ago a program on the discovery channel where an organization was taking dogs from local pounds and training them to detect cancerous cells in the human body by smell. These were not Majestic or Bloodhounds mind you, just mutts, but were successfully identifying cancer in living human tissue on scent alone. Several years ago I had a redbone with a good nose and I was in hog heaven because I finally had a dog who could consistently find hogs, then one day a man gave me a young cur gyp bred from his personal line of very consistent curs and within two months the young gyp was leaving out on tracks so fast she'd be bayed while that good was still figuring out the hot side from the cold one. Soon after I abandoned the dogs I had been hunting and made the decision to solely pursue getting more like her. Years later I now have dogs that all are able to leave on sign and go bay hogs, some faster, some smarter, some better than others, but knock on wood, I haven't had one in a while now that wouldn't at minimum "go look at" a hog.
This is not to say I believe these curs have a "better nose" than a hound! I don't for a moment think they have as "cold" of noses, but I do believe their brains are wired differently in relation to how they process a track.
I can expand more later if the discussion is worth having, but for now, I've got to get back to work.
You touched on something I wanted to discuss for a long time, so I think I will start a topic about it called nose. You make some great points T Bob