Actually Darren reportedly slammed the "Superman" script calling it "messy" and that he didn't like it and this is supposed to be the reason why he passed on the project.
I am starting to come around on this a little. The prospect of Aronofsky directing a Chris McQuarrie script that focuses on Logan in Japan and apparently adapts the Miller/Claremont mini-series has potential. He was able to get a terrific performance from Hugh in "The Fountain" which is one of my favorite movies now that I've finally recently seen it. I think this could very well turn out to be a huge step in the right direction since the two have worked well with each other and could work out any creative differences.