So. After readind Detective Comics 678 on DC Universe I am convinced that the issue is PRE-Flashpoint before Thomas Wayne took over the mantle as Batman. Just hear me out. Perhaps Alfred shared his story with Thomas leading to the inspiration to become The Batman of his Universe. During Zero Hour this story is such a precursor to Flashpoint so many years before it happen.
What do you think? To me personally this story could totally be told in that Flashpoint Universe and sync up.