OK, then they probably used the latest US mastering.
They also issued the Bill Evans Complete Village Vanguard 1961 recordings 3CD set in 2003. That set was conceptualised by the Japanese and I believe there were some Japanese characters visible on the bottom (backside?) of the ZYX box. I guess they didn't use their own mastering there either, because they couldn't possibly have had access to any previous release. After 2005 the US edition of that set was imported into the EU rather than it being produced locally. I used to own the ZYX, which got damaged, and now have the Concord set, so I can't compare.