Seriously its predictions like that causes mass fanboy meltdowns and disappointments! Regardless of the addition of 3D, the market expansions, Nolan's name, WB fantastic marketing etc,,,,,,its just unrealistic to expect the superman franchise to go from 191 mill OS to 600 mill, such jumps simply don't happen for reboots.
I honestly believe this film will do SR numbers (with added 3D and market expansions) WW , but will hopefully stand out from its predecessor in the sense that people will like this film and will look forward to the sequel where the real money starts coming in.