Ian Keldon wrote:
In tone, there isn't much difference now. Nu52 was DC explicitly trying to copy the Marvel style with edgier stories, a less open and accepting relationship between supers and the community, etc.
Did you somehow miss the 80s and every comic published since then? DC really began to out "edgier" Marvel back then. Dark Knight Returns, Watchmen and the proto-Vertigo titles spring to mind. Also The Man of Steel mini, Batman Year One and Hawkworld.