I think that this has more to do with mastering then media format. Much CD mastering is highly compressed to sound "better" in mobile applications. Vinyl RIAA is a compression/decompression format that when done well is very good, but often, especially in pop music, done poorly. Hard to make a generalization because many vinyl records were highly compressed. There is no shortage of examples of bad mastering in digital or analog! Don't even get me started on high priced, heavy weight vinyl mastered from the CD files.
Cheers,
Geary