__________________ ''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
While Maul's showings aren't quite as flashy as Satele's, the implied significance behind them puts him on her level if not above imo. This is not accounting for Satele's showings in KOTFE since the speculation that the Satele we saw is Valkorion.
Satele coming from Revan's bloodline and having the the title of grandmaster do imply that her raw power may be greater than that of Maul, but this disparity is negligible imo since Maul possesses the title of one of the greatest sith assassins in history, and Maul's tutelage under the most powerful sith in history, and being considered a worthy successor would suggest great force power. Maul's bloodline has a healthy amount of force power behind it too, given that maul's brother Savage is the TK beast we've seen in TCW and maul's mother is Talzin herself.
Satele's feats are impressive, her force augmentation that allows her to blitz sith warriors and having her movement be compared to a cannonball are good. Her tutaminis feat with the lightsaber is nice, and her throwing Malgus into a mountain and then pulverizing the side of the mountain is probably her best TK feat.
Maul matches all of these feats imo however ( besides the TK one); Maul's speed enhancement that allows him to blitz droids, mercs, and Komari Vosa along with easily contending with Anoon Bondara and Qui-Gon imply to me that he can match Satele's speed. Maul has no showings with force lighting, nor does he have many showings with energy attacks if at all iirc, but this just means Satele will have nothing to absorb, and since this is a force only bout, no lightsabers. This means no extra energy Satele can supply to her own force attacks btw. And while what Satele did to malgus was impressive, I think Maul can tank her TK (if she even has the opportunity to pull it off) given his impressive endurance : Killing a Wampa after being mauled (heh) by it, tanking a fall that would break an ordinary man's back in TPM, and ofc, surviving being bisected and coming back stronger. Not to mention Maul has his own showings of TK like pulling that ship off a cliff in TCW, breaking through Kenobi's defenses in Sith Hunters, and shoving Kenobi with enough force to crumble a tunnel in TCW.
In conclusion, I think this this would be a good fight, but Satele has nothing that could put Maul down imo, and even stands at risk of enraging Maul with her attacks, in which case I think Maul would have the upperhand. Maul takes the majority.
__________________ ''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
Leaning Satele. Maul has a great advantage in his insane durability, but rarely ever does the one taking the insane beating outlast the one giving it to the extent they can go on to win the fight.
Yes, I am implying Maul would be the one taking the beating. Proceed with the "kek"ing if you so desire.