Darth Sion vs. Darth Malak

Who wins, The former apprentice of Darth Revan or the quasi-immortal abomination? Takes place on flat, neutral terrain.

Sabers, Force, All-out

Malak's above all of the people Sion has ever outright defeated. Sion definitely takes endurance though perhaps not an all out win, but I'd like to see if Malak can crush Sion into fine powder while Sion continues to rebuild himself.

Sion with mid-high difficulty.

Sion is outclassed but he'll win.