Keep in mind folks this is NPD data only. Until recently the X360 was still ahead in installed base. We're only a few weeks past the changeover so the fact that the Wii hasn't past its raw software numbers is understandable.
The point of the Nintendo graph is that they are outpacing the 360's software sales in the US from launch, it's a valid point because if MS thinks the Wii is doing poorly with 3rd parties right now then they also think they were doing absolutely terrible at the same point in the 360's life cycle.
@Erik Aston,
It isn't completely invalid but its not really useful the way they try to frame it either. The Wii will almost certainly outpace the raw sales numbers for the simple reason that its install base will very quickly overtake any sort of attach ratio advantage the 360 has.








