WiiU won't sell more than 4m this year - and even that'll be hard to achieve!! The Vita will surely have sold 5m copies åt the end of the year - perhaps even 6m LTD, but no more than that. The 3DS will easily hit 6m, perhaps even 8 - so I'll go a head and predict 7-7.5m sold 3DS' this holiday.
I'm on Twitter @DanneSandin!
Furthermore, I think VGChartz should add a "Like"-button.