User blog comment:Damac1214/Sales of Black Ops II are a "Cause of Concern" for Activision/@comment-67.0.54.121-20121202070525/@comment-4778612-20121203012937

Halo 4 = Halo 3, Halo: Reach and Call of Duty 4 had a threesome that impregnated Halo 3 (which is why it didn't carry over Reach's crappy armor ablities and excessive weapon bloom) and Halo 4 was the result. That's how I think of it.