Hmm ultimately I think it's the dvd and blu-rays sales that are going to edge this movie into the "profitable enough" market.
As I for one have no interest in watching this movie in cinema, but will get it on Blu-Ray.
That may just be me though, I don't watch a lot of movies in the cinema anymore, this year I'll probably stick to Prometheus, Avengers & The Hobbit.
I rather think you can't compare a Uncharted movie with this one though, and I can't see a Uncharted movie doing 'as well' as John Carter is doing.