A draw rolls more than a fade because it has topspin. It's amazing how often I hear this. But it's obviously not true. If it had topspin, it wouldn't carry 100 yards. That describes a duck hook, which may indeed have topspin, but not a desirable draw.
How did this myth start, and how close to true is it? Well, some draws reduce the backspin and some fades increase it. So, although a draw doesn't have topspin, it may have less backspin than a fade -- thus it will roll farther.
Why should this be? And why don't I say it's true for all draws and fades? Draws and fades can be caused by changing the swing path while keeping the clubface pointing at the target, or they can be caused by opening/closing the clubface. Only really good golfers have enough control of their swing path to determine ball flight via swing path; most golfers will try to open or close the face. This can take many forms: rolling the forearms through impact to close the face, using a stronger or weaker grip, setting up with face open or closed, etc. But they all have one thing in common; they involve rotation of the shaft around its axis.
Consider the figure at the right. Diagram (a) shows a perfectly upright 90º lie. If clubs were actually built like that, then rotating the shaft would open or close the clubface, and nothing else.
But real clubs are built more like diagram (b), with a lie in the vicinity of 60º. Rotation around the shaft's axis occurs at an angle. So it does not simply open or close the face.
* Rotating the shaft to close the face also hoods the face, reducing the loft.
* Rotating the shaft to lay the face open also increases the loft.
So you would expect a draw created this way to fly lower and have less backspin, because it was struck with less loft.
QUOTED From: The Tutelman Site on Golf Technology