Superman's baggage is a 200M+ name. MOS will be huge if marketed right and is a good film. Superman Returns didn't do good because simply put audiences hated it. Their's little buzz on this film? Well except for casting which has gotten some nice buzz on a lot of websites, lets not forget this film is a year and a half away. We also know little about the plot and theirs been no release of photos or anything yet. You have to build interest and that hasn't started yet since the film has even started filming yet.
Well, Zack Snyder making Sucker Punch certainly isn't going to generate positive buzz. Apart from Nolan, the cast is the only thing that can draw any buzz towards this film at this point.