I haven't played it yet. And i didn't say the changes have nothing to do with COD, just that they don't seem to turn the game into another COD. From what I've seen the the only thing I would call out as Call of Duty inspired are the ordnance drops, which don't do the same level of advantage change that Killstreaks provide in COD.
So to you the undroppable flag / weapon use with flag, loadouts, unlockable starting weapons, selectable perks, killcams, and the words plastered across the screen after every kill are completely original?
Hell, some of the perks are literally lifted STRAIGHT from COD. You have one that gives you unlimited sprint, another that lets you start off with two primary weapons, reload and switch weapons faster, suppress grenade damage.
Even the FORMAT is the same. 3 classes of perks (Armor Ability, Tactical Package, Support Upgrade), you pick one from each.
Come on dude.
Edit: And despite my reservations about all these changes, I will reserve final judgement until I play the finished product myself. But everyone that's saying there is no COD influence in Halo 4 MP are either completely clueless or just willfully ignorant. That's the target audience they're trying to win back.