Some of those stood out to me watching the scene as it played in the film itself, especially when it was Qui-Gon AND Obi-Wan vs Maul. Plenty of openings for either Jedi to destroy Maul.
Well then there wouldn't be a fight would there? I mean in other movies, you see other fights play out and there are various opportunities to kill someone but it doesn't happen. Theres nothing that is 'fail' because movies are suppose to provide entertainment, if people died within the first 2 seconds of a fight then thats not entertainment.