Serious issues with the "metodology", I'd say.
MaximumPC article

Oh dear, where to start? 10 Subjects, 1 Trial? Preference between two tracks? Its nice to see that doubleblind-methodology spreads, but unfortunatelly, these results simply have no significant meanings at all. If you go already to through the hassle of DBT, then why not do your homework completely, so that the effort isnt spent in vain?

- Lyx

Yeah, I read that article. I too questioned the testing methodology especially since many people could "hear" a difference between the 128kbps AAC and 256kbps AAC files using the stock Apple earbuds. I call BS on that one.