The real difference with Quattro is that you do all your braking in a straight line, as normal, but instead of then feathering the throttle and slowly giving it more and more as the corner opens out, you just turn into the corner and plant your foot to the carpet. You can feel the power shuffling around to the wheels with the most grip and the cornering is amazing.
Of course, you can't re-write the laws of physics, so you can't expect to go around a corner 40 mph faster or you will be in the scenery, but if you slowly creep up to the limit, you will really feel the difference between two and four wheel drive. It's good fun !! Just try it !!!!