User blog comment:Sppople/Sauron vs. Palpatine/@comment-83.100.179.221-20140327162215

Sauron wins

Sauron will only be killed if the ring is removed from his finger and Palpatine usually hits his enemies chest.

Sauron's mace is really strong and won't be broken by a lightsaber easily.

Sauron can also alter the world around him, so he could use this to destroy Palpatine's lightsaber. And then he could hit or poison Palpatine killing him.