User blog comment:Damac1214/Call of Duty 2014 Being Developed by Sledgehammer Games, Call of Duty Moving to Three Year Development Cycle/@comment-24420679-20140209020130/@comment-89.100.49.34-20140209083122

Because Sledgehammer weren't involved in any other game. MW3 is hated by far more players than any other game. Logic dictates that they hate Sledgehammer.