I'm a huge fan of BatmanXWonderWoman for the JLU continuity. I think you've gotten Batman's character down okay... though Wonder Woman is confusing. I'm not sure if you're basing this on her comic book personality or her animated continuity personality. Plus, the events seem to support the animated universe but the supporting characters are more of the comics continuity. Sorry, it just confused me. I'll have to read more story to decide if I like this treatment.