Which begged the question, isn't Wonder Woman in that fight? "Wonder Woman already has problems of her own by that point," laughed Morrison. "Superman, Batman and Wonder Woman get targeted by the New Gods pretty quickly. Those are the first big targets that the Gods have to bring down but you'll see Wonder Woman's confrontation with Mary in #3."
So Diana is going to have her ass handed to her by "Black Mary"?
Well, narratively speaking, if THE big fight is Black Mary v. Supergirl, it lessens the impact to have Diana defeat Black Mary before Supergirl gets a chance at her. It means that Black Mary isn't really that much of a threat and the fight between her and Kara isn't really a big deal.
So, I'm of the mind that if by "confrontation" Morrison means "fight," Diana is going to lose--which really falls in line with Morrison's feelings about Diana, if his comments long ago about Wonder Woman in Wizard Magazine and his expressed desire to have Big Barda beat Wonder Woman in battle remain true.
Of course, I'm just speculating--but there's a whole HEAP of literary evidence that supports the idea that when it comes to Wonder Woman, DC drops the ball more often than not.