Given that this has been bumped, I'll give you all an update:
Halo 4 has now sold more in 8 weeks than GT5 sold in its first 70 weeks.








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







