That guy (on the escapist) was far to lenient. He made some good points, but watching that movie was painful. Cinematography was good, but there was also really bad. Like being in the characters grill whenever they talk. It made it feel awkward. The script was also terrible, giving the exposition in a stupid way. He also failed to mention the pace of the film, which (in combination with the script) single-handily ruined the movie. I mean, yes the sets are amazing. Music is amazing. Outfits are amazing. But you don't see them enough and a lot of decisions shymalan made with his directing was just bad.
Example: Having Aang run out into a fully guarded camp and start preaching about protest (with a bad script)
Example: When the fire nation was about to attack the Northern Water Tribe, having them jam their (spears?) into the ground like flamming idiots. Lets face it, they looked stupid
Example: Back to example one, after Aang finishes his terribly written script and the baddies come, katara stupidly runs over and pushes one of the guards screaming 'leave him alone'. Weak.
Example: Possibly the best example of bad script writing and terribly quick pace was when the general confronts the firelord about Zuko being the Blue Spirit...everyone in the theater laughed
Example: The interpretive dance moves required to do some (stupid looking) bending, then a single movement for something far cooler and complex. It just doesn't make sense.
Example: Like said by Brandon, a lot of the problems come from trying to jam too much content in....but that spawns the bad pacing, the bad script, the odd flow of the movie, and the incoherent story. Which took up until the last like ten minutes when the movie actually started getting good....