Here I will explain it for you. Unlike the piece of shit awd system in your DSM, my truck has a transfer case that is not controlled by a center diff. So when I put my truck in 4wd, the front and rear wheels turn at the same speed at all times. Accelerating or decelerating. As opposed to your car where the awd system only works when the front wheels start spinning and the center diff enguages the tranfer case, and rear wheels, etc. So in 4wd, under braking in my truck the front wheels dont lock up unless the rears do, and vise versa. So the fact that the wheels are connected directly to the engine with no differential to allow slippage helps prevent them from locking when braking on slick surfaces. Im not saying the wont lock up, im just saying it makes it a bit harder to lock them up. I dont know about you, but its much easier to stop when you are not in an uncontrolled slide. Now if you need further explination of what I am talking about, I will gladly give you a ride in my truck the next time it snows and demonstrate how this works. I wont let you drive, because I know how many times you have driven your cars+snow tires off the road in bad conditions.
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