Blade Runner has a very bleak and dank atmosphere as well, of course that's part of what makes it what it is. Even without the whitewashing controversy I don't think GiTS would have done much better. Just my opinion that these style of films look hard to sit through for a lot of people.
I'd love to be proven wrong, but BR49 is projected to open around $40 and finish around $115 ... unless it's HUGE internationally, it's not even gonna make back it's money ...
I imagine for WB to call it a success they'd be wanting around $500m WW.