Halo 4 sells 128k in Europe this week (it sold 126k last week).
525k+ WW this week is certain...
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