Looks like maybe google.com is finding a completely different artist, http://musicbrainz.org/artist/6f412e06-0a2b-4cca-9623-9fb9ca950e5e vs. google.se finding http://musicbrainz.org/artist/4380b6a0-6d74-405f-980e-4a4817229374
Might be fixable with aliases, though I’m not sure if google really understands Musicbrainz’ alias values.
It might also just be the particular way the various search terms appear and are prioritized by the various language search engines.