Will black ops 2 break sale records?

Currently call of duty is one of the best selling game series ever. Breaking pre order sales records everytime a new title is released. The question is, however, how long will this continue?

 Engine - Call of duty games are made on a very old engine. This engine has been hevealy updated over the years but it doesnt compete with newer engines like frostbite 2. If Call of Duty doesnt get a new engine soon it will start to lose popularity over competing first person shooters. Black ops 2 has been anounced to have the same engine. Some fans don't mind this and they don't see a need for another engine, but, others were disapointed.

Repetitive gameplay - Call of duty's gameplay hasn't improved much since cod 4. I was very disapointed when i first played mw3 because it just felt like mw2 with new maps and guns. I'm currently debating on whether or not to get blops 2. It does spice up the gameplay by going futuristic but after seing the multiplayer gameplay it looks a lot like old cod games.

Futuristic warfare - while some people love the new idea other gamers are turned off by the fact it takes place in the future. Most people that buy every call of duty title released strictly because its another "cod" won't mind but for gamers who don't like changes, it will be a no go.

Personaly I like the idea of it being futuristic but after the gameplay i've seen i can conclude it is nothing new and worthy.