I'm only rating this because it is my personal experience. I purchased the game a few days after release and my my were there some bugs.
Even though some of them have been squashed (bugs) there is a serious problem with SBM. I will have 2 or 3 maps that were good and instantly be thrown into a game of people who have absurd skill.
I get it, it's to balance the game however; it doesn't justify dropping me into 32/8 KD/R lobbies.
I play xbox and there is a glitch in multiplayer when I play with my PC friend, where my warzone loadouts show instead of my custom classes. Not a soul has said anything about this online so I am putting it on the official game review.
Also just as a job to Microsoft I'm really disappointed that you are focused more on making money from Call of Duty then actually giving their console better network adaptivity. The lag is absolutely God-awful and it really inhibits the game played because of shots not registering. (I have 1gb internet.
Also Activision needs to fix their app. The app is completely unstable and does not even load any of my results or any of my profile.
As a conclusion to my review I would say do not spend $70 as you will suffer very very badly. Unless you are a die hard fan of the series you might not want to purchase this game.