Darth Maul vs. Darth Sion in Unarmed Combat!

Exactly, so we can't assume that he is a super martial artist.

im not sure if any1 saids this or not but even though Darth Sion cant lose his life he loses tha will 2 fight

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In an unarmed fight, Sion [i] is [i] invincible. He can't be hurt physically.

Unless it's Durge or some other crazy character.
Maul has more skill and all, but Sion just won't die, and eventually kills Maul.

True.

Maul's quicker and more agile, but Scion has overwhelming strength, and the nifty ability to be virtually invincible.

Scion wins.

Sion was also extremely agile.

yeah, but no matter how invincible you are, you still get tired...

Not tired enough to go down, especially not enough against an unarmed combatent. The things is that he was struck by a lightsaber and still stood up, and said he could be struck down a hundred times and would still not give a damn. Maul is done for...