^^ looks like I underestimated it slightly!!
Halo 4 sold 176,412 worldwide this week, which is 34k more than I originally predicted in the OP!
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