It's not terribly surprising with the Tales of series since we've always had a lot of the games not released here, but we usually got main releases. Vesperia PS3 was shaky at best when you consider we didn't get the (questionably better) Symphonia PS2 port, though this is more due to Nintendo having translation rights to the game.
We've gotten Legendia, Abyss, and Vesperia, all main series games. We've not gotten Innocence, Hearts, or the new mothership title Graces on Wii or pretty much anything since Dawn of the New World.
Now, please keep this in mind:
-Outside of the two Symphonia's, advertising has been non-existent for the games outside of Japan.
-Many of these games were positioned alongside other major releases... Abyss, for example, came out just a few days before Final Fantasy XII launched in the U.S.
Now, with Namco clearly moving its sights to PS3 entirely, you would think with the rather negative hammering Final Fantasy XIII got in the west and the general lack of interest in XIV due to being an MMORPG that Namco would smell blood in the water and try to make a push for a larger market share in the West before Square can restore its image or the niche is filled more by Atlus or XSEED.
Nope. They're doing nothing.
Frankly, at this point, Namco JP seems quite happy shoveling out some retarded Pacman drivel no one will buy and this year's Naruto/DBZ fighting game rehash.