The cover is the same and is a digipak in both editions, only the logo of the label is different. In 2006, Ryuichi Sakamoto and AVEX ENTERTAINMENT INC jointly stablish Commmons label to search for new possibilities in music. Honestly, if your derisory problem is only the cover of the album in each edition I prefer to rely on the label where Sakamoto cooperates and no other (of course this if the cover is different, but not is the problem in this case because both are the same). if you'll feel empty tagging correctly after all this time struggling ok, don't change it, but if you are interested in the lastFM community and their statistics please, change it.
Exactly, the correct artist is Fennesz Sakamoto for releases like Centre, or Sala Santa Cecilia. Of course it's the union of Christian Fennesz and Ryuichi Sakamoto, but Fennesz Sakamoto is the alias they use. Nice to see people here trying to improve their tags & credits =]
update: seems the (beautiful) very classy orientated label site ( http://www.touchmusic.org.uk/archives/reviews_fenneszsakamoto/ ) is tagging and promoting it under 'Fennesz Sakamoto' (i guess good for the targeted audience that way)) )... so, well... i let it like that then -and that page here is the right one too so). Not Tom & Jerry either, i guess, after all.. ))
Listening Cendre album right now ; seems to be fantastic one indeed. Now... little doubt on how to tag it correctly : Fennesz Sakamoto or Fennesz & Sakamoto (like Sasha & Digweed in good progressive trance genre for exemple, i guess -?) : any idea?