I'm agreeing that Desann would win, but remember: Darth Maul single-handedly and literally destroyed the Black Sun, a criminal organization so strong that Sids, said that some would call it the most powerful force in the galaxy. He went through the entire fortress unharmed, until he fought the bodygaurds, and right after fought a Nightsister. Sure just a walk in the park.🙄
He also fought and defeated two Jedi in combat....at the same time.(because Obi-Wan was promoted to Jedi Knight a day after Darth Maul's Defeat, I'll referr to him as a Jedi Knight....That being said, has anyone else noticed that when a Master and an Apprintice both fight a Sith Lord, The Master gets pwned, and the apprintice slayes him?🤨 ) In a way, Darth Maul was fighting a Jedi Master and a Jedi Knight at the same time. Not to mention one was basically a council member.(Qui-Gon was too rebellious).
Desann was like a Dark Jedi genius. unlike any Sith, he literally created Dark Jedi! On his attack in the Jedi Temple on Yavin, He fought nothing but Jedi, and Jedi and MORE Jedi. some likely Jedi Masters! Luke Skywalker said "there's no telling how powerful he's become." If Luke Skywalker feared him, you know he's believe he's a threat.