Probably the same reason Gravity Rush was delayed in the US: To spread out major releases on the Vita. We have New Little King's Story, (possibly) Ragnarok Odyssey, and AC Liberation in October alone. That's a lot for the Vita as it stands now.
Originally Posted by Shizuka
Why take a game that was slated to August, a month with virtually no new Vita games, to October and November, the most crowded months for the Vita so far?
Originally Posted by Mettool