That image does seem to imply that he is taller than the other figures, but then again Orlando is a couple of inches taller than Depp. I honestly am not very bothered by all of this, though. Height is such a fluid thing in film -- lots of times they will give actors something to stand on in close-ups, for example, so looking at the actual heights of the actors, or looking at a full-body shot of them from the movie isn't always the definitive answer about how tall the characters are "supposed" to be. You've gotta love this shot: