When you are going against the wheel, you are creating more friction and "resistance". When you go with the wheel, its much more gentile. It's a hard concept for me to explain in words but the way i see it is this. Picture 2 cars crashing into each other, and than 2 cars going in the same direction one infront of the other, with the second one going a bit faster than than the first. The 2 crashing into each other, is much more harsh, just like the "cut" action and the 2 cars going in the same direction is less harsh, like a "color" motion. Dunno if that makes any sense, but i think the real key is the amount of friction and resistance created by the motion. I sure hope im right, if im not someone please correct me
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