“The challenge for us coming in after [Arkham Asylum developer] Rocksteady is to do something that hasn’t been done. Something that isn’t a retread and isn’t [a] copy-paste of their game. It has to add value, it has to bee new. To me, the key to that prequel is the invigoration that it adds to things.” - Eric Holmes, creative director
“We are very aware we are standing on the shoulders of giants. We are playing in the space of some of the most critically-acclaimed games of all time and we’ve greatly benefited from that.” - senior producer Ben Mattes

Also interesting, Warner Bros. has said that Rocksteady has been helping whenever Warner Bros. need. They may not be developing the game, but they are offering up technical help, such as how to handle Batman's cape.