When Luthor asked who Jason's father was, Lois hesitated and answered "Richard" in a tone that suggested she knew Superman was the real father, even before the piano stunt. She seemed suitably surprise by junior's sudden show of strength for us to believe this was the first time he had manifested any kind of super powers.
I hope you like it. The theme actually has more than a few similarities to Superman Returns.
Superman's opening was obviously stronger than Batman's, giving it a slight head start, but where Batman took in around $40 million in its second week, Superman only managed $32 million, and the 3rd week is off to a slow start too.
Batman ended up with about $205 million, but WB had to keep it in circulation for ages to hit the mark, and it seemed to have better word of mouth than Superman, which is now becoming a bit of a Hollywood whipping-boy, despite WB trying to put on a brave face about it. It's currently at $163 million, which by normal standarRAB would be alright, but unspectacular, and for as expensive a movie as Superman, it's not good at all.
It should be said that Superman's running time was around 100 minutes longer than Batman's, though, which means less showings per day, but Superman was on more screens than Batman, so I'm not really sure how that compares, but I would say it gives Batman at least a slight advantage.
Still, any way you look at it, Superman's box office is a disappointment, and word of mouth isn't good.