Interresting but the test was between masters in a studio, not between the end products of CD and LP, which is what the average and above average listener would be using respectively. :D
Using a different type of music may have helped to reveal differences. I've always found analog to be much better at reproducing ambient venue sounds, hall sounds, or 'air' vs CD's of the same recordings.
Of course there are many different degrees (sampling rates, word lengths) of digital. The test did not indicate (that I saw) what was being used and if it was what a consumer would get with a red book CD.