Where have you seen any proof of this? I thought there was going to be AA's because of the jetpack seen in one trailer of master chief using one to go through space or something.
I agree with NO AA's. Halo is not halo with sprint and AA's. It's just a sci-fi version of CoD. Yay! Halo 3 was the last Halo that actually felt like Halo. Reach was bad, but compared to 4, Reach was better imo.