Ever notice how many falls Jedi have made that would kill anyone else if they fell from that height? Take Obi Wan in TPM. In the fight with Maul he fell who knows how many feet, then jumped back up that many feet only to go on fighting. Or Luke on Hoth, he falls from the AT-AT, and doesnt even hurt his ankle. Sure it was snow but from that height you're still going to hurt something. I guess its just a random observation, but how is it possible not to get hurt after the fall? Sure they're Jedi, but Jedi are vulnerable just like anyone else.