I found Arkham city too much of retread of the original game and it lacked in both plot improvements, originality or graphical advancement. Not a bad game in isolation, but compared to the first, it was more like large DLC than a "new" game. If the next Batman game is "more of the same" then I'll skip it. I played that game twice already.
There are 10 types of people in this world. Those who understand binary and those who don't.