Big Barda vs. Knockout -- No, the other one
Way back when, Circe turned all the men into animals, leaving only women to save/destroy the world. As you'd expect, the execution was pretty half-assed, with just a few panels dedicated to each fight between characters before they got back to a "Who's Who" entry and waited for Grant Morrison to decide what zeitgeist they fit. But hey, that doesn't mean a few panels can't be awesome...
Yes, Gail Simone has nothing to worry about, but I do love Scott the Parrot. Both because he's a bird -- even when altered by a magic spell, he still retains that spark of freedom, he's still flying around and probably shitting on Circe's car -- and because Big Barda + Scott the Parrot = PIRATE BARDA.
She'll make you walk the plank. And by plank, she means Mega-Rod. And by walk, she means "get beat about the face and chest."