Well KDR they could of target this game to the Armored Core, Custom Robo, Gotcha Force and Zoids fanbase so it isnt really farfetched. Im mentioning AC, CR and GF because Zoids for cube also has customization. And its the first Cube game made by TOMY to be released in US shores. They atleast could of put the traditional ads atari puts out on magazines and/or TV but hey they exactly didnt advertise Ikaruga really which is a damn shame.
I still hope some one publishes the Naruto Cube fighting games in America Atari or Nintendo or someone else I JUST WANT IT LOCALIZED AND RELEASED IN AMERICA.