I don't think they are. Dynamic range is easily quantifiable and vinyl has worse dynamic range, full stop, compared to CDs. Anyone claiming otherwise does not know how to measure dynamic range.
Likewise for bits, there is very little evidence (and, in fact, lots of evidence to the contrary) that you can detect the difference between a 24-bit and a 16-bit recording, assuming they're mastered the same way.
Likewise for bits, there is very little evidence (and, in fact, lots of evidence to the contrary) that you can detect the difference between a 24-bit and a 16-bit recording, assuming they're mastered the same way.