That Audi video looks a bit suspect to me. The Audi looks like it's about to die before it gets anywhere near the camera (tires are spinning and it has lost momentum), then it cuts to a shot of it going past the camera so fast it practically takes air of a bump.

I also wonder what they did about equalizing the tire/wheel combos between vehicles. If they aren't running the same model and width of tires, then the comparisons are meaningless if you're trying to compare the abilities of the AWD system.