First, neither CD nor DVD/A is compressed. CD has a fixed word length and sampling rate: 16/44.1. DVD/A 's offer much higher resolution (although keep in mind that they don't have to--a recording could use all that storage space to increase playing time or the number of channels, rather than the resolution).
On a technical level, the benefits of higher resolution are debatable. Also, direct comparisons are tricky, because you don't know whether the CD and DVD versions of any recording were identically mastered. It wouldn't take much EQ to swamp any perceivable difference in resolution.
Finally, louder almost always sounds better. I wonder what JB's impression would be if he tried a comparison after level-matching his CD and DVD machines. I'd bet the differences would be a lot more subtle.
On a technical level, the benefits of higher resolution are debatable. Also, direct comparisons are tricky, because you don't know whether the CD and DVD versions of any recording were identically mastered. It wouldn't take much EQ to swamp any perceivable difference in resolution.
Finally, louder almost always sounds better. I wonder what JB's impression would be if he tried a comparison after level-matching his CD and DVD machines. I'd bet the differences would be a lot more subtle.