I don't see it as being less detailed. The presentation is different. Overall it's a neutral Op-Amp. 627AP would be less detailed due to the treble appearing to be somewhat rolled off. But what that Op-Amp makes up for is detail in its mids and bass. So 627AP would be the most musical of them all while 8610 has qualities of both sounds IMO without going overboard on either.
I see, but less sound stage from the 8610 is going to be a problem though.