Since Modern Warfare 1 (CoD4) I gambled every part. For me definitely the worst part of the CoD series. The maps are too small and therefore the will to survive in a pure matter of luck. The Free For All game mode is not playable on the small maps, because constantly spawn enemies behind or next to you. The weapon balance is not balanced and the Quick Coopen is again possible and indeed worse than MW3. Shotguns, pistols and weapons essays are partly much too strong and enable a fair game.
In addition to the worst and little maps of the CoD series is available in the game such connectivity issues that fair competition is not given.
I can only recommend once on Youtube the term "camera Lag Black Ops 2" must be entered, that was me then just too much and I sold the game immediately. Without dedicated servers and above all better and bigger maps with a balanced weapon balance I will buy no more Call of Duty.