CD on Esoteric UX3-SE

Would this player be on par with the X-03 SE for redbook CD? Any thoughts would be appreciated.
My understanding from an Esoteric dealer is that the universal X-03 and X-01 units perform worse than the stand alone units in music playback, but that ultimately, it is up to the system being used as to whether that differences are detectable and/or relevant to an individual.