The Xbox 360 version sold 64,000 (90%) units in its first month of sales, that's roughly about 100,000 - 110,000 (90%) units for all versions. I don't have a precise estimate for its first week sales.
We just know DAII dropped 68% in its second week, while nothing is said about its third week (3DS launch week). For that week, we have just 360 version in top 40, between Nintendogs + Cats: Golden Retrivier and Lego Star Wars III: The Clone Wars for DS.