SCEA can be picky about this stuff...
One of the things I hate about them. And it's helped aggravate a dislike for achievement systems, though this is really just SCEA idiocy rather than an inherent flaw with the system. Well, I guess it indicates how people can get so obsessed that it's actively seen as bad
to let releases skip them, but I think it'd be better just to let things sort themselves out and at least allow a digital release.
EDIT: Ofcourse, I could be wrong and other complications were involved with other games, we didn't see very many so it could be either technical issues (saw something mentioned on Neogaf about Ad hoc libraries for Monster Hunters 3 Portable) or simply not existing in English, like that K-On (I think) game.