The decline of the Nintendo DS and Wii is greatly exaggerated as evident by numbers pulled by MCV for the week leading up to Christmas.
MCV notes:
"More games were sold for the Wii during the week ending December 18th than any other platform - the console scored almost 30 per cent of the market in unit sales terms last week, putting it just ahead of 360 and with some distance between it and PS3. Plus, when you include DS unit sales, Nintendo formats claim almost half the week's software sales."
It should be noted that in terms of pounds Xbox 360 is the single most successful format for the week thanks to its higher average price on software.