Re: Oh no you don't
"Did they also do a FLAC-to-vinyl comparison to see if true audiophiles could tell them apart better than random guessing?"
Should be trivial: FLAC made from a CD basically has no noise, S/N >100dB, and unfortunately vinyl can't do that: Increase the volume and the noise is audible.
But IMHO the point is not in the media, but in the recording itself: Most of the mainstream music you can get is so compressed and clipped that the media you use is irrelevant, even if it's compressed to 128kbit/s MP3-stream.
It's shit to start with and nothing can save it later.