fair against the following characters trying to kill her, starting from 50 meters away? Zannah can still defend herself with her lightsaber, although we know that she isn't very good at doing that.
The order might not perfectly progress vs. willpower, so please rate individually.
Warm-up/trash: PoD Bane and Kas'im
1. AotC Anakin
2. Agen Kolar
3. Qui Gon
4. Darth Revan
5. CW Maul
6. Darth Malgus
7. RotS Anakin
8. Dooku
9. Darth Jadus
10. Darth Vader
11. Exar Kun
12. Darth Krayt
13. Luke Skywalker
A: Wins 1-3 and 7, 10, probably (not solidly) 5, 6, and 10. Could get 8, but not too likely. Doesn't do much to 12 or 13 and barely doesn anything to 4, 9, and 11. The wins are purely from them not having very impressive TP resistance feats that I can remember. Maul is mainly from his having resisted TP assaults before, though Malgus I'm not inclined to say does as well as Maul, but having lived in a time when powerful TP was common, I'd imagine he'd have defenses, but I don't want to assume. The losses are pretty simple, Krayt and Luke resisting Abeloth, Kun resisting Nadd, and Revan having some of the best willpower in the mythos.
B: 1-8 and 10 she probably takes the win purely because I don't see any of them having the reflexes or Force defenses to resist her tendrils for 50 meters before melee range is achieved. 9+ I see pulling wins against her (sans Vader) for some of them (Luke, Jadus) having the capability to dodge them and others the Force defenses to resist them.
Revan's memory of the Mandalorian Wars was flawed. Even after getting his mask back, it's clear there were overlapping and contradictory memories. For example, on the Foundry, Revan's account on how he fell to the dark side was completely different from his summary in the novelization. He's not a reliable source. The book makes clear Revan did not recognize or associate with the terrible dark deeds he committed during the Mandalorian Wars. He believed he fell to the dark side when fighting Vitiate, but in truth he was long prior already a full-fledged dark Jedi who had studied Sith techniques. We can really directly dismiss Revan's claim because it states that Malak and him "blocked out all memory of the Sith and the Emperor," which blatantly isn't true. SWTORE states that Revan went to war for the *specific* reason of uniting the galaxy against the threat the Emperor posed. This is also a central theme in KotOR II. All in all, if Revan only partially broke free from the Emperor's control, he wouldn't have stole the Star Forge for himself, nor wage war against the Jedi with the intent of one day destroying Vitiate. One can say Revan was *indirectly* still under Vitiate's command because he was still fighting the Jedi and the Galactic Republic as planned, and perhaps that's what Drew tried to convey there but failed, but it wasn't due to Vitiate's direct influence.
__________________ "There is only Revan. Only he can shape this galaxy as it is meant to be shaped."
__________________ ''It is necessary that I should die for my people; but my spirit will rise from the grave and the world will know that I was right." The Almighty Führer