In your link the xseed guy said, that all the development changes are done in Japan and that they only publish the games. So naturally, I was talking about Marvelous there. There is absolutely ZERO reason, why Europe should wait longer for a game than the US, if the publisher has subsidiaries in both regions.
It's also funny that all the stuff the xseed guy throw at you that must be done for a release in another region, are no problem for most Western publishers, which often release their games within weeks or even on the same day in Europe and the US; often including even multiple languages, other than the latest Marvelous releases.
EDIT: With "Lord of Magna: Maiden Heaven" they even showed, that they are capable of doing this themselves. So I really don't understand why they don't do this always that way.