What if anikan had won on mustafar
If Anakin had won on Mustafar, he would have become the new ruler of the galaxy, as he was the right-hand man of Emperor Palpatine. It is likely that Anakin would have continued to carry out Palpatine's orders and enforce the Empire's oppressive regime.
It is possible that Anakin's victory on Mustafar could have prevented the destruction of the Death Star, as he would have been the one to lead the attack against the Rebel Alliance. However, he would have still faced the consequences of his actions, including the loss of his family, friends, and Jedi Order.
Overall, while Anakin's victory on Mustafar would have changed the course of galactic history, it would not have necessarily resulted in a better outcome for the galaxy as a whole.