You know, I will chime on here since we're talking about the GFG AT KOs here. The thing is, the first winter I drove on them (this is coming to be my third) I felt a huge difference. I used to have stock Grabbers before that. I have driven my dad's Nissan Maxima that compared to tge BFG ATs his tires didn't handle for shit, although I don't remember which tires they were.
To sum it all up, based on what I have driven previously, the BFG ATs are the best tire I have driven on snow and ice, granted that I have NOT tried a dedicated snow tired yet.