While I think that they are equals I don't think Obi-Wan is in command the entire time.Here, Obi Wan is constantly on the defensive, which he isn't at all in the movie. It totally misunderstands the character and the relationship at play. Obi Wan isn't frantically dodging to stay alive by mere millimeters He's in command the entire time.
While I appreciate the tension of the original scene, it's still one that I do not personally enjoy. This scene isn't the answer, but viewing this scene in light of the prequels highlights just as odd to this scene has stood out to me.
I don't have a good way to state this but it is a scene that I just find slightly off in the overall narrative of the film.
That all said, overall I think this scene does misunderstand the fundamental aspect of the scene as two aged masters who practiced that control with every strike. But, there is just something there of highlighting the limits of the original scene that makes me appreciate this fan work even if it doesn't fit the original film.