Actually....for USA it looks like GTAIV might be overtracked, and Wii Fit undertracked.... SSBB looks spot on, and MK Wii not too far away.
End of July:
Game - VGC/NPD (USA only)
Wii Fit - 1,474,584 / 1,433,000 (VGC 40k higher... should be nearer 140k higher)
GTAIV - 5,746,167 / 4,711,000 (VGC 1mil higher... should be nearer 500k higher)
SSBB - 3,913,448 / 3,539,000 (VGC just over 10% higher....so very close)
MKWii - 2,694,625 / 2,409,000 (Again just over 10% higher)
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Guitar Hero III confuses me... because I assumed it meant all platforms, but the PS2 version alone has sold what that NPD number shows..... so either they are only showing PS2 version (but forgot to mention it) or for some reason are only showing HD versions, leaving out Wii and PS2.
NPD (USA) - 3,037,000
VGC:
PS2 - 3,391,738 (about 10% higher, so it fits)
PS3+360 - 3,613,376 (just under 20% higher, so about 8% higher than it should be if the NPD number is for HD only)
Wii - 2,383,421
All 4 versions - 9,388,535
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Another combination that works is Wii + PS3, but I can't think of a reason why they would leave 360 and PS2 out, wheras leaving PS2 and Wii out makes some sense.
