Roger Ebert gave it two and a half stars, which is not too shabby...considering.
Does "John Carter" get the job done for the weekend action audience? Yes, I suppose it does. The massive city on legs that stomps across the landscape is well-done. The Tharks are ingenious, although I'm not sure why they need tusks. Lynn Collins makes a terrific heroine. And I enjoyed the story outside the story, about how Burroughs wrote a journal about what he saw and appears briefly as character.