The real issue is SQ and that includes the recording and mastering, not just how many bits it spits.
I'm told that many early SACDs were originally just upsampled CDs. And some of the ones I have make grungy source material (Stones) sound too sweet, tho I dunno if they were re-mastered or just upsampled.
My view is that you need to be very careful as to what you are paying a premium for over Redbook CD, and get info on each and every release.
Even if high res is an improvement over Redbook that one can hear*, it will be very difficult to show that a difference that is clearly due to SQ is NOT just due to re-mastering. So I don't think anyone can say one is always better than the other, at least not yet.
*And I have never seen a carefully done study showing that.
I'm told that many early SACDs were originally just upsampled CDs. And some of the ones I have make grungy source material (Stones) sound too sweet, tho I dunno if they were re-mastered or just upsampled.
My view is that you need to be very careful as to what you are paying a premium for over Redbook CD, and get info on each and every release.
Even if high res is an improvement over Redbook that one can hear*, it will be very difficult to show that a difference that is clearly due to SQ is NOT just due to re-mastering. So I don't think anyone can say one is always better than the other, at least not yet.
*And I have never seen a carefully done study showing that.