I'm not surprised really. The Macbook Pro is a great machine. I love mine.
The article would have be a lot funnier if Microsoft actually sold computer systems. Vista is just an OS, and a Macbook Pro is just computer hardware packed into a beautiful design. Macbook Pro or Dell, they still are Intel CPUs, Toshiba HDs, Nvidia video cards, and so forth.
I bet the fastest system that runs OS X isn't a Mac (but then again, Apple does have some beefy desktops).