WTF? No one has been able to contradict what Kenobi and I have been saying about Yoda blocking the drain! If Nihilus loses the drain, he's toast. As for Sion, sure he can keep coming back to life, but you know what, who the he11 cares? He can almost definitely be immobilized, and even if not, he is nowhere near Mace or Anakin duelingwise. They can just hold him off until he just gives the f- up. There's no way two Sith lords are going to destroy 10,000 Jedi in a battle. If so, why would Palpatine bother with the clones and Order 66? Why not just put all his energy into converting the Chosen One, and let the two most powerful Sith in existence fight the Jedi Order? BECAUSE IT CAN'T HAPPEN. 10,000 > 2, no matter how strong the two are.