What if Anakin died on Mustafar in Revenge of the Sith?

In a universe a long ways off, where predeterminations are entwined with the back and forth movement of the Power, a critical second unfurled on the red hot planet of Mustafar. The air snapped with pressure as Anakin Skywalker, when the Anointed one, confronted his previous coach, Obi-Wan Kenobi, in a duel that would reverberate through the halls of destiny. Much to anyone’s dismay that this conflict of lightsabers wouldn’t just decide the destiny of Anakin yet in addition send waves of progress through the world.