Because their dumb asses didn't market it correctly. How do you make a Wonder Woman animated feature and not even think to market it to girls and women?
There are women I know who don't fukk with comics or cartoons but they'll pause and take a look at anything that has Wonder Woman in it.
That WW movie was dope, too. You could watch that shyt frame for frame and imagine that shyt live action


No Tim Daly? 
