Vaapad is described as Mace containing an immense concentration of Force energy that's about to explode at-bay, and then through his mastery of the technique, using the energy to augment his abilities in ways that wouldn't be possible through standard means due to having so much more power readily available. That being said, the second element, the super-conducting loop, in which Mace was able to establish Palpatine's power as the subject of the loop and not his own, is perhaps by forming a Force bond or using a variant of Consume Essence. Mace can sustain this explosion of energy via the additional dark-side energy flowing into him from Palpatine and then back again into Palpatine (the drawback is the risk of losing control of the energy and being consumed by the dark-side, but with Mace's heightened mental state due to the situation of Palpatine being Sidious, that wasn't even a threat in ROTS). That's my interpretation of it, at least. Thus, then, without having Palpatine-level power to support the ball of energy he's keeping at bay, Mace wouldn't be able to maintain such a level of power (which is all his, by the way). However, I imagine Mace can replicate the power of any dark-side opponent he is fighting up to the level of Sidious. I'm not sure how the ability would work against two powerful opponents and another dark-side ally, such as here with Kun, Droma, and Dooku, but at the very least he should be able to get to at least Kun's level, but perhaps even much higher (again peaking at Sidious level).
I find the rest agreeable, but by energy about to explode, are you referring to Mace's increased "inner darkness"? I'd argue his inner darkness wouldn't just dissipate after the fight, rather it's something that stays with mace much in the same way the inner darkness from the outer rim sieges still remains when Kenobi meets mace in rots.
Originally posted by Trocity
This fight is no where near a stomp, what the hell? Kun couldn't stomp Baas, he isn't stomping guys who are head and shoulders above Baas.
Kun toyed with Baas, and ended the battle the moment he was bored of it. The only person who remotely came close to contending with Kun in sabers is a bonafide prodigy and master duelist Ulic. The two of them are way above others in their era by a solid margin.
Comparatively, Dooku is probably the best technical duelist in the prequel era, and the only true practitioner of Makashi. Mace Windu's duelling expertise relies heavily on plot bias and how generous the media, meaning he could arguably stalemate Kun or Ulic, or be completely defeated by either after a pitched battle. IIRC, Shatterpoint even notes that Mace's signature style relies heavily on a weakness being both easy to spot and easy to exploit. Otherwise, he would have walked through everyone in that novel, Depa included.
If we're talking peak-Sith Lord Ulic and Kun, amped with dark side relics, I think the PT crew might be at a disadvantage though. We're talking about modifying rage, which for dark side combatants is like catnip. I don't see Mace making a perfect maelstrom of Plot ****ery to overcome that. I certainly don't see Dooku doing so, given that he lacks the ability with his style to indefinitely deflect rage hammering and neither Ulic or Kun would be ignorant of his style.