If they'd done a teleportation tweak before the test, they would have heard the difference. Like night and day.
http://www.machinadynamica.com/machina60.htm

I personally think that Monster Cables are over priced, and you won't notice a difference. I think it's in people's heads. I also seem to remember something in science class about 2 dissimilar metals creating a current when they're placed together. Wouldn't that be a bad thing when plugging a gold cable into a nickel socket? Gold is better about corrosion, but I don't buy the "it sounds better" arguement. The best thing you could do to improve your MP3 sound quality is to up the encoding bit rate when ripping the tracks from CD. I've got several songs on my iPod that "distort" when there's large dynamic changes in the song. If I'd ripped the tracks at a higher bit rate, that wouldn't happen as much.

Signal cables (those that go between devices, not speaker cables) have such a minimal effect upon sound that it is not worth mentioning. Only truly bad cables might do something noticeable; otherwise any decent cable of a decent length (less than 25ft) will work identically.

There is NO (let me repeat that), absolutely NO engineering in expensive cables, because there is nothing to engineer. Any potential differences are not measurable and therefore not measured - and without real metrics, there is only hype and marketing.