DC keeps trying to say that the superheroes in the New 52 have only been around for about five years. That doesn't WORK with Batman!!!! They're trying to condense YEARS of history for the Bat-verse into five years. This means Dick was only Robin a couple of years at the most, Jason was Robin a year, and Tim has been Robin(I don't care if he took a slightly different name) for at least three before Damien took over.
I for one try to ignore that. With Batman they didn't HAVE to do that. If they wanted to make Superman THE first superhero they could've still done that, but make it where Batman has been active longer! Have it where his and Robin's existence isn't really acknowledged by anyone outside of Gotham and even in Gotham he's still more of an urban legend to most.
You see? SIMPLE!!!