Let me amend a prior comment. you still do not let off the gas. with rear wheel vehicles the rear tires lock up and the front wheels do not and you go into a spin. With front wheel cars it locks up the steering wheels and turns you wheels to skis. Its the same difference as in sand you hit the gas and you bury the car with rear drive. with front drive hitting the gas attempts to climb out of the rut. Your main stopping power comes from the front with help from the weight shift from rear to front to maintain tire grip on the road./ the rear only is there to keep your but behind you. Pickup drivers know this very well.