I think in the end, Ayu's gonna end up selling more than aiko though~ since sometimes Ayu's singles sort of stutter when other 'popular' releases come out as well. Kirakira was sort of bouncy with fairyland when it came out. :F and fairyland stil got #1 in weekly, right?
Edit: I just looked back at the old topic and that week, fairyland sold 172k and Kirakira sold a little less than 100k. ~_~