What I meant was they had easter eggs that the Joker in that reality was Jack Napier - so original Keaton Batman movie. They later mentioned something about Mayor Cobblepot's regime meaning it wasn't the Batman Returns reality because he was discredited prior to the election. So it's a reality kind of like the Keaton movies but not exactly. But of course since it's still the CW they probably just threw in some references without giving them a second thought.