I found this interview with frankie. It has no spoilers or anythings, its about the loadouts and things like that.
As long as CoD and Halo exist apart from one another, you’ll never fully quench the comparisons. While some traits may appear to be ‘CoD-esque’, in no way were they just ripped straight from Call of Duty without any regard for how they may fit in with the game, which some seem to believe.
But thanks for the share! 
As long as there is FPS games there will be CoD comparisons.