If Anakin had beaten Obi-Wan on Mustafar, the outcome of the Star Wars saga would have been drastically different, with several key possibilities:
- Anakin would have killed Obi-Wan, removing the Jedi who opposed his fall to the Dark Side and the rise of Darth Vader
. This victory would have solidified Anakin's full embrace of the Dark Side without the physical and emotional trauma he suffered in the original timeline.
- Without Obi-Wan's survival, Anakin would not have been left severely injured and encased in the life-supporting suit. Instead, he might have remained physically whole and potentially more powerful, possibly even challenging or overthrowing Emperor Palpatine later, as some speculate
- Anakin's victory could have deepened his descent into darkness, but there is also speculation that witnessing Obi-Wan's death might have sparked a moment of remorse or internal conflict, given the good still present in him
- The Republic and Jedi Order would have fallen more swiftly, with no Obi-Wan to protect Luke Skywalker or train him, possibly altering the fate of the Rebellion and the galaxy's future
- Padmé Amidala's fate might have changed as well, potentially surviving and influencing events behind the scenes, such as supporting the Rebellion covertly
In summary, Anakin defeating Obi-Wan would have meant a darker, more tyrannical galaxy under Vader's rule, with the Jedi wiped out and the Rebellion either delayed or weakened. However, some fan theories suggest this could have led to new conflicts, including Vader turning against Palpatine or a different path of redemption
