I think this is an unanswerable question. All the equipment you use to play them back will vary from person to person and from system to system. Even a universal CD/SACD/DVD-A player may be better or worse at any one of the formats than the others, biasing the result you hear. Also, comparing a digital front end to a turntable which is a horse of a totally different color, a completely different and separate output device will make direct comparison complicated. As has been pointed out, different gear with different signal paths will be used in converting the master tape to CD, SACD, DVD-A and vinyl, so it's never an apples-to-apples comparison.
Finally, we still need to play back the tape on an analog tape machine to hear it or to transfer it to digital. Therefore, the playback device will always impart its own coloration on what we hear. We'll never really know what the analog tape really sounds like in the abstract sense. How do we know we are hearing the sound of the master tape or the sound of the playback device?
Yeah, that's probably splitting hairs but I think this is a complicated question. I would also venture a guess that virtually no one here on the site has ever actually listened to an original master tape to begin with, so they have no baseline to compare to make a pronouncement one way or another. And if they have heard a master tape, it was probably material that they didn't know like they know their favorite CD/LP/SACD/DVD-A version of it, and played back in a studio on unfamiliar gear. So they still have no real sense of what it might sound like on their own rigs as compared to CD, SACD, DVD-A or vinyl, in an environment/test bench with which they are familiar.
