Wonder why Disney bet so much on a movie. Just because it is 3D does not mean it will succeed.
The character/storyline is new. They should not have spent so much on an untested movie character.
Disney admits John Carter is on course to lose $200m | Mail Online
Nobody heard of this story character John Carter. It is not like, say...James Bond character that was wildly popular with the movie seeing public
Special effects will not be able to support an uninteresting story line.