THe mysterious sith emperor from the old republic vs Grandfather and grandson anakin and darth caedus

Location:death star with no storm troopers
Positions Anakin and darth caedus at the bottom and the mysterious sith emperor at the top,
Restrictions:non, your even aloud to cut walls open.

This probally would be a hard decision because not much is known about the sith emperor.

Who will win?