Im also wondering if both vehicles had 4 wheel drive engaged. I'd love to see these 2 vehicles really square off.
Anyway, the bit about who's being pulled first also interests me; anyone else wondering about the difference of static vs dynamic friction of rubber on pavement?
That is certainly what I've observed in my own firsthand experience.
Also, as I understand it, it's why anti-lock brakes help a car stop faster. (Though anti-lock brakes also help you retain the ability to steer, which is different but also important.)