Zack Snyder's brutal Wonder Woman isn't the compassionate DCEU version. However, his take on the character could exist elsewhere.
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I am glad that Patty Jenkins persuaded Snyder to peruse Wonder Woman as a polarizing hero who happens to be both a brutal, war-torn warrior from another time at times and a compassionate intemporal Christ-like peacemaker figure, as she leans to be in most of her Golden Age and post-Crisis mainstream iterations (save the New 52 and Flashpoint ones) : instead of just delving gorily into the former aspect of her 'Noble Savageress trope' personality trait.
Either way, Wonder Woman usually don't behead regular human opponents unless they turned out into
unredeemable powered murderous psychopaths (like Ares in the films, or both Medusa and Maxwell Lord in comic books: the lattet one wasn't someone to be reasoned with unlikely the live action cinematic iteration, who was still affectionate of his son and thus empathically and spiritually reachable for the demigoddess) aside Cheetah, who for some guilt complex motivated reason remains untouchable no matter the iteration.
That was a little off-character. DCEU Superman assembles a balance of every classical comic book iteration with some strong Frank Miller-esque influence and even props from both the Donner era and Smallverse iterations. DCEU Batman does as well, with major Frank Miller-esque and Scott Snyder-esque influence and some minor pre-films background story props to the previous cinematographic iterations (save Bat Clooney) : for example, his earliest vigilant activities in 1995 according the DCEU Wikia blog coincides with the events of 'Batman Forever' but echoes most of the events seen in both the 1989 Batman film and the 2005 'Batman Begins' film.
But his early drafts on Wonder Woman?? Too much Elseworlds-esque. Diana has been exiled/sent into the Men's World as a ambassador of Justice, Love and Peace above anything else, not to play out Red Sonja or Xena in the mid-19th century Europe.