Other mistake: In the shot where the Hulk's pants get ripped off by the wind, you can see that he's wearing green underwear (helps if you pause it at the right moment). (00:43:25)
Other mistake: When "Jumper" lands on Prince Caspian's sword, it goes straight through him, yet there is no blood on the sword. (00:32:15)
Answer: It was written for the movie.
LorgSkyegon