I think citing "legs" for this title in the UK is a bit optimistic - it started badly and is already dipping. Even if it maintained current sales levels in the UK for the next year, I think its overall sales for the region would have to be considered modest for a Nintendo franchise.
I was one of the people who thought this might sell a good few million (worldwide, obviously), and still think it might if genuine legs are shown in America (no idea if this was ever a popular franchise in Japan). It really doesn't look like Europe's going to be contributing much to this game's overall sales, however.