Rok, I repeated the test. This time I gave the bargain CD all the advantages. The CD was in my listening room and the LP was in the basement. After synchronizing the two, I listened in the basement for awhile before going back to the listening room. This time the results were even worse; it sounded like the bass tone controls (which I don't have) were turned up on the bass, and it was "boomy".
There is a possibility my love, affection and familiarity with this music could give me the ability to detect a deviation that others wouldn't sense.
Enjoy the music.