Suggested by iKnowledge Darth Sion is a pretty tricky Sith Lord because he is immortal and can keep coming back to life as long as he feels rage. Immortality can be a bit of a weakness though as getting struck down over and over again can be disheartening. Kyp’s skills as a Jedi and as a Sith are better than Sion’s. He may not be immortal, but Kyp would keep slashing away at Sion until the latter lost his will to fight and regenerate. Ultimately superior skills will almost always be superior to regeneration. Kyp Durron wins.