But I noticed you had picked up on the canon-busting elements of Burton's Batman - as 'corrected' by Nolan; which takes us into interesting territory. Comic books such as Batman and Spidermand and Superman are all long-running, encompassing many different writers and artists, each with different ideas and different things to say, and unfolding over entirely different generations, each with their own mores. Over time the characters and their universes have been tinkered with countless times. Canon and orthodoxy have been turned on their heads countless times; the reboot is a familiar occurrence.
Whereas a comic like V For Vendetta is finite. There is no sequel, no continuing adventures, no spin-off strip for a spunky young cohort. V For Vendetta is that single story arc, with a beginning, a middle and an end. So when a film adaptation so diverges from its source material, it is that much more noticeable.
With a character like Batman, a chameleon cipher practically in public ownership - a vigilante, a psychopath, a boyfriend, a patriot, a detective, a killer, a role model, a subversive, a fascist - there are a thousand different versions of the story that can be told, and each one can be 'tr ue'.