User blog comment:Damac1214/Some Zombie Polls with Some Extinction Polls Thrown in for Good Measure/@comment-67.168.154.162-20140115163417

BO1 had a better zombies experience, but BO2 had better lag comp built into zombies, so you didn't have to deal with that crap where you had a quarter of a second or so between the time that you shot and the time that the game recognizes that you shot.

So, BO1 had better zombies, but BO2 had better zombies gameplay.