I would go to a movie solo if we could get Wonderman, this aqua chick, and the catwoman to room together at the Justice League. Get those girls together with these marvel girls, Invisible woman, Black Widow, Wasp, and that red Witch. And put them all into a league of their own. You don't even need a villain.
the generic plot looks identical but that's missing the entire value added by Taika Waititi. Based on the trailer my opinion is I doubt it.