I've done informal but blind tests with DTS and DD. The DTS was clearly identifiable. But I think it may have more to do with whatever engineering skills the DTS are bringing to the mastering, rather than any simplistic techno difference between the compression schemes.

More interesting, I think, would be a comparison between the non-lossy and the lossy tracks. In my comparisons, the differences are heartbreaking. The lossy technologies throw so much of the sound away.