In all honesty, The Wonderful 101's sales was only from at least a couple of days in Japan; Plus, for many cities it was the end of the Summer Festival too from my knowledge of lurking around other message boards, so with shops closing early it may have had some impact…
Don't know for sure myself, but I hope it will sell more as word of mouth goes by about the game. I sure as hell know I'm excited for it and can't wait for it to release! :D
Plus, I'm all for Platinum Games becoming another Nintendo 2nd Party company; The Big N would appreciate their talent like they do Retro Studios.
--- Update From New Post Merge ---
Finally, here's the box art for Donkey Kong Country: Tropical Freeze...
That's how you do a boxart!!