HappySqurriel on 19 September 2012
The Wii initially started out at a similar rate to the iPhone simply because iPhone searches were an order of magnitude smaller back then ...
The second search should probably also be: http://www.google.com/insights/search/#q=Wii%20-%22Wii%20U%22%2CWii%20U%2CXbox%2Cps3&cmpt=q