This has got to be one of the top 10 worst predictions ever.
The only ones worse than this that come to mind are gilgamesh's one about PSASBR outselling SSBB and Trollwhisperers one about Resident Evil 6 selling 10m
My prediction threads:
Wii U will sell under 40m units (made on 14th September 2012)
PS Vita will sell under 20m units (made on 30th September 2012)
Wii U will sell under 7m in 2013 - I was right