Yes this is what I'm talking about. In the Budokai's, they fight all sorts of animals that are like humans. A dog is the King of the world. They have gorillas, wolves and alligators fighting. So the clear divide between animals and humans is just not there.
Roshi's superhuman comments hold little weight, they are on par with Tao Pai Pai being surpassed and the shock and Roshi's non stop "what will happen to my position" bullshit. It doesn't really make sense. Goku is performing superhuman feats left and right. Perhaps he was only talking about speed.