Science is based on observation, among other things. I observed two scope come out of a warm truck at a cold range and fog. The Bushnell didn't. I was not surprised. Why do you even care?
Did not read the whole thread but Leupold used to make the raincote screw in lens system which was nice. Bushnell offers an awesome fog/moisture deterrent on their better scopes. Still waiting for Leupold to come out with rain deterring coating