Titanic Battle?
Darth Revan, Darth Bane and Darth Traya versus (Dark Empire) Darth Sidious, (Dark Empire) Luke Skywalker, Darth Tyranus, (Original Trilogy) Darth Vader and Darth Maul.
Revan is armed with two lightsabres and is wearing his robes.
Darth Bane is armed with a lightsabre and is not wearing his orbalisk armour.
Darth Traya has three lightsabres (for levitating) and one for fighting. She cannot use her insta-kill power.
Setting: The office of Palpatine
Who wins?