Quattro vs. Subaru AWD

[tlazay@ultranet.com]

Well, I guess I'm about to embarrass myself by expressing my ignorance once
again. I've recently posted some basic audi questions and I must say you all
have been extremely helpful. Here's the killer:

I'm about to receive my 97A4Q. My friend owns a Subaru legacy AWD. He was
saying that the AWD on the subaru was just as good if not better than the
quattro system. I told him that I didn't think that was the case but I
couldn't explain why. I'm sure the two systems are not the same, what is the
difference and why is quattro better?