Nah, just takes getting used to. In terms of realism, graphics, and things to do, it blows all the other ones out of the water. Halo, COD, all of them.
It's not run and gun, you have to be more strategic about it. Utilizing cover and checking before running.
But I can't even see who is shooting me, I don't even see a person from the other team before I am dead. Call me crazy but I like run and gun, or at least the fact that everyone in Halo kinda stands out like a sore thumb for me its part of its appeal. I will keep trying but so far not impressed.