I have been a fan and student of boxing for 25 years.
Broner had zero footwork, and was putting his hands in places that ultimately led to Roy Jones Jr.'s demise (only at that age, RJJ had sufficient speed/skill to make fighters miss).
Maidana throws some unorthodox punches, and when fighting an unorthodox fighter, you MUST stick to the fundamentals, as the basics are there for a reason, they protect YOU, and they ultimately expose the flaws in your opponent.
Broner even holds his mouth open, which will further expose him to a knockout/broken jaw. I saw zero fundamentals from a young fighter. He has merely gotten by on his speed/ability prior to this fight, and he got simply outclassed and exposed for not having sufficient power.
I don't know what to make of Broner, honestly. He is in an identity crisis. If you plan on not throwing many punches, you better be a very good counter puncher when in trouble (he didn't), and if you are going to rely on speed, you should throw a lot of punches to keep your opponent honest, and score points with the judges.