Week 9!
DS 06 -- 124,286
3DS 13 -- 77,572
This is the week of the release of the DS Lite, as well as the following DS titles -- Children of Mana (106k), Doraemon: Nobita no Kyouryuu (17k), and Magnetica (11k). Consequently, DS hardware sales spike to nearly 125k. The 3DS also saw one major and two smaller software releases this week, but they are unable to spur a significant increase in sales, barely pushing hardware up a few thousand. The three games were Professor Layton and the Legacy of Super Civilization A (133k), Dragon Ball Heroes: Ultimate Mission (90k), and Touch Detective: Nameko Shigeru (26k).
Week 10 preview: DS sales increase to 140,392 next week, with only a small (6k) new release. With no major releases coming next week, it's likely 3DS sales will drop. DS could have a 2-1 ratio over 3DS.
The tally thus far:
DS 06 -- 576,206
3DS 13 -- 1,028,001
Adv 3DS +451,795