Sorry, cd, if I put more into your brief post than was there. I'd expect that a well-mastered low-resolution disc will always be better than a not-so-well-mastered high-resolution disc. I'd also expect that two identically mastered discs, one CD and one SACD, would sound remarkably similar.
The trouble with comparisons to date is that there's no way to know whether you're really comparing identical masterings. It takes very little tweaking to make two otherwise identical recordings sound quite different. Even when you've got a double-layered disc with DSD and Redbook versions, you can't be sure that somebody didn't nudge something somewhere. Some people have even suggested that record companies may intentionally tweak the sound of SACDs to make them sound dramatically different. I'm not so conspiratorial. All you need is one engineer to say, "Hey, this sounds good, let's try it."
The trouble with comparisons to date is that there's no way to know whether you're really comparing identical masterings. It takes very little tweaking to make two otherwise identical recordings sound quite different. Even when you've got a double-layered disc with DSD and Redbook versions, you can't be sure that somebody didn't nudge something somewhere. Some people have even suggested that record companies may intentionally tweak the sound of SACDs to make them sound dramatically different. I'm not so conspiratorial. All you need is one engineer to say, "Hey, this sounds good, let's try it."