| > I think they took this ending from the same way Sherlock Holmes first died and might solve it the same way.|
> This last part was very similar to the final battle between Professor Moriarity and Sherlock Holmes over the Reichenbach Falls (which the reader never actually witnesses in the novel) but when Watson arrives, he assumes they both (Holmes and Moriarity) went over the Falls to their deaths.
> When Holmes resurfaces after the fans went crazy and demanded Arthur Conan Doyle resurrect him, in â€œThe Empty Houseâ€ his missing time is explained. Holmes says that being assumed dead allowed him to hunt down each one of Moriarityâ€™s remaining gang. In addition it allowed him time for meditation, time to retune his abilities, travel the world in disguises etc.
> Does this sound much different from what DC is doing?
It's probably along those lines, except Bruce resurfaces in "Final Crisis" before going away by the time "Last Days Of Gotham" hits.