I'm bowing out of debating this topic with this post as your probably right though I do find it interesting that most if not all of the "saber styles" first appear in the PT novels and Matthew Stover (the author of the Revenge of the sith novel) says that Lucas himself went over and read the book "word for word" and cut out a lot of the EU references (after his staff already went through the book and did the same) in the book yet left "lightsaber forms" in the novel. Which means he probably did the same for the other 2 PT novels as well yet left the concept there. That's all I'm going to say because I think I know what type of response I will receive.
^Oh and Sweers there is an answer for why Obiwan fights differently in all 3 movies that Blax touched upon but I doubt you would want to hear it. 😄