Jacen VS Anakin:
Jacen kills Anakin. The timeline of the SW universe changes:
Anakin did not force choke Padme and never went to the dark side. Because of that Padme brought up Luke and Leia. Since the Empire was never founded, Alderaan was never destroyed and Leia still had her mom alive when she met Han Solo.
Obviously Padme didn't think that Han would fit into her family (A smuggler marrying a princess - WTF ?) so she used her connections to Master Yoda to solve the problem.
(Han and Leia meeting. Yoda standing behind a curtain nearby)
Leia: "Han, I love you !"
Yoda (closing his eyes, moving his hand): "A stupid b1tch you are !"
Han: "A stupid b1tch you are !"
Leia: "What the hell ?!"
Yoda (still keeping his eyes closed and moving his hand): "Paid a visit to a whorehouse I have. Very nice that girls from Eroticon 6 are."
Han: "Paid a visit to a whorehouse I have. Very nice that girls from Eroticon 6 are."
Leia: "Han ? How could you ? And why are you talking backwards ?"
Yoda (still moving his hand): "Your mother better looks than you !"
Han: "Your mother better looks than you !"
Leia: "GET OUT OF MY SIGHT, IDIOT !!! How could you say something like that."
Han and Leia leave the room. Yoda comes out of his hiding-place.
Yoda: "When 900 years you are much choice you won't have..."
Because of this little interference by our little green dude, Jacen was never born. So after killing Anakin something goes *plop* and Jacen ceases to exist.
Vader vs Morpheus:
Both opponents stare at each other. Both ready to attack. Morpheus swings his Katana with a lightning fast speed and Vader immitated that movements with his lightsaber. Just in the moments where both opponents are about to attack Vader senses something and jumps in the air. Morpheus tries to keep an eye on his opponent and the twins drive over him with their car. Vader wins...