>>281373069
That's because Japan doesn't want reverse importing being done, so western releases are often gimped in some way for native viewers.
Less special features, worse packaging, region coded, shit like that.
Some releases are also forced to have the Japanese audio tied to the English subtitles as well. The only releases that achieve parity with the Japanese side are ones typically sold for equivalent prices (i.e., $120 for one cour) directly by the publisher.