No disrespect, but the fact that a forum poster convinced YOU that he could tell the difference between high bit rate lossy and lossless hardly constitutes "scientific fact" that high bit rate lossy is audibly distinguishable from lossless, or that there is a select group of individuals who can make the distinction. The incident may be interesting. It may even be worth investigating further. What it's not, though, is proof.
Again - no disrespect - but it goes both ways. With bigshot and Lan647 saying conclusively that it is indistinguishable - but someone like DeadlyLover showing Foobar logs on volume matched samples that say they can distinguish - then I guess we are left with the premise that most people seem unable to show proof that they can differentiate (I certainly can't), however it seems possible that a small percentage of individuals may be able to differentiate.
Either way - I agree - the current data seems inconclusive :)