There has been made a couple of music flicks over the years, but none of their stories will be near the Creed movie's. I can not remember a single movie that's made to show the media's effect on a rock band and what enormous pressure rockers go through. Like ACDC says: "There's a long way to the top, if you wanna play rock n' roll!!"
So...in my eyes this will be a totally new kind of movie! If the movie becomes a flop 'cuz it's about Stapp, then the story of the proves the point alone!