Just to throw my hat into the relationship ring, while I agree that Superman/Wonder Woman didn't paint them as equals, it was only in a mythos-using context. In that they used more of Superman's for setting/threat on a consistent basis. As characters though? They were absolutely equal. Her strength was usually up to par (she was beaten up by Doomsday, Superman helped. Superman was beaten up by Zod/Faora, Wonder Woman helped, etc.), and mentally if anything she was the more mature one. Its why I enjoyed it. And to date, is still the most successful romantic relationship Wonder Woman's been written in for decades. Definitely was better than the current stuff with Steve. Better than Nemesis, better than Barnes, etc.
Batman I don't even factor in, as if we're sticking to comics they were never a thing in canon anyway, outside a brief will-they-won't-they flirtation which ended pretty quickly in "they won't".