But if they did use kotor, I am pretty sure they would not make a movie out of kotor2, cause it sucked.
KotOR II was far from "sucking." The game was just forced to release unfinished. In many ways, it greatly improved upon KotOR. Much of the story was cut out and chopped up to meet the release deadline, but the TSL Restoration Mod restored most of the lost content and makes the game way more complete, as it was intended.