9.5 from polygon
http://www.polygon.com/2014/11/7/7076007/halo-the-master-chief-collection-review-xbox-one
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