Walt Disney and the director of Finding Nemo (Andrew Stanton) bring Edgar Rice Burroughs’ pulp hero from Mars to the big screen with the big-budget, 3D extravaganza John Carter. Big on effects, grand in scope, the film paints a high-action, pulpy science-fiction saga full of spectacle, beauty and romance with curious underlining father-and-daughter themes. The film struggles to get all its pieces...