Hate to burst your bubble but the movie spliced footage they wanted you to see and made a story based on that to make a hero and a villain. The whole story isn't presented there. While I hate to quote Wikipedia, they do mention discrepencies about the film and actual events. This is an interesting fact as well:
"Director Seth Gordon has also admitted to skewing facts and altering time-lines during various interviews concerning the movie. Through careful editing and instigation, Seth Gordon was able to create a storyline loosely based on reality. However, Gordon contends that the movie would have been "darker" had he not played with the facts; a 2008 interview/article by Retro Gamer Magazine, 52nd issue, with Billy Mitchell, Walter Day, and Steve Wiebe suggest otherwise."
I'm not saying the whole movie is false or that there was a head to head live competition never shown between the two. Billy could have rose to the challenge better. But the movie made things appear more worse than they are. Heck, I bet Billy probably didn't have any idea that the movie was about Wiebe trying to break his record. He probably just thought it was a documentary about competitive gaming and was probably asked a wide variety of questions and was filmed doing many things involving that. For instance, we are shown him sending the old lady to play Q-Bert. That was him being involved in his competitive gaming community.
In fact, that is alluded to in this
interview:
AVC: You thought it was going to be a more direct documentary about video gaming?
BM: The truth is, I never knew it was even going to be about Donkey Kong, I thought it was competitive video gaming as a whole. But the truth is, none of us are ever mean. None of us are ever vindictive, and we've never had a mean-spirited movie or story or film done about us, so this was a first.