The reason vinyl would sound better to someone is because they use different/better masters for some reason (I blame the loudness wars for the recent resurgence in vinyl), and people preferring the way vinyl "colours" the sound.
This reflects my thoughts on the subject, too. There are a couple of technical reasons to have different masters for vinyl, but there's no reason the CD masters can't have the same master, or at least the same dynamic range or warmth that vinyl masters always seem to get (a good example being DT12, absolutely no reason the HDTracks or vinyl masters couldn't have been on the CD).
And let's face it, even with the different mastering for CD/vinyl, a lot of the "vinyl is better" opinion is placebo, too. There are people who only think vinyl is better because they have been told that it is.
I wouldn't go that far, as the better master does make a huge difference. It really depends on what part of the sound you value more as a listener. Also, people may not be listening to CDs and vinyl on the same equipment, so it's hard to A/B them for quality.
I think CD and the digital era of music in general has had problems not related to the medium itself. When it first came out, they weren't using good digital transfers of albums, and the albums were not properly mastered for the format, so they sounded thin and flat. The same goes for early digital recording equipment too.
By the time the digital technology had matured, we then got the loudness war, and it's no wonder people are listening to vinyl, when the masters used on the digital versions often sound so awful. The vinyl versions can sound better than the CD in certain regards, but imo there's absolutely zero doubt that CD is the much better sounding medium, when actually done properly.
And I think record companies are more than happy to charge people more for a vinyl version that isn't as easily pirated.
And so here we are in a situation where the 30 year old albums in my collection usually sound much better than the brand new ones. THANKS
OBAMA RECORD COMPANIES.