As AP points out,
Never reference Kulvax in your argument, even if you agree with her. It diminishes its credibility.
Exar Kun can only access "some" of his powers through vessels like Kyp, and Kyp himself considers his powers to be feeble next to Kun's.
I'm assuming you're referring to the following quote:
"He reached out with his mind, following the paths of the Force that led to every object in the universe, drawing power from the cosmic focal point of the Massassi temple. He searched, sending his thoughts like a probe deep into the storm systems of the gas giant. Behind him, Kype felt the black-ice power of Exar Kun arise, tapping into him and reinforcing his abilities. His own feeble exploratory touch suddenly plunged forward like a blaster bolt. Kyp felt larger, a part of the jungle moon, then a part of the entire planetary system, until he burrowed into the heart of the gas giant itself.
Pale orange clouds whipped past him. He sensed pressure increasing as he plummeted down, down to the incredibly dense layers near the core. He sought the tiny speck of machinery, a small, indestructible ship that had been cast away. When he reached the bottommost levels of the atmosphere, Kyp finally found the Sun Crusher. It stood out like a beacon, a bull’s-eye in the funneling field of lines of the Force. Size matters not, Master Skwalker had repeated. Kyp engulfed the Sun Crusher with his mind, surrounding it, touching it with his limitless, invisible hands. He thought about heaving it back up, dragging the Sun Crusher out of the depths of Yavin. But he discarded the thought.
Instead, with the assistance of Exar Kun, he used his innate skill to power up the controls again, to move the control levers, push buttons to alter the course stored in the Sun Crusher’s memory, bringing it out of its entombment. Kyp continued to watch the weapon’s progress, focusing on the sphere of the enormous planet as it crested the misty treetops. The Sun Crusher appeared as a silvery dot, seeming no larger than an atom as it emerged from the highest cloud layers and streaked across space toward the emerald-green moon where Kyp waited."
I'd like to reference the red text, which makes me to believe that Exar Kun is rather instead locking hidden power deep within Kyp Durron, thus allowing him to heighten his powers to ways that made his old self look "feeble." There is a clear distinction between that, and then him declaring his power to be feeble next to Exar Kun, which it appears you are trying to argue.
Plus it's stated that lifting the Sun Crusher had tired Exar out, and that his spirit form is weaker than his living flesh one. If we combine all of these handicaps together, we can extrapolate that living Exar would be pretty f*cking powerful.
While later in the thread you are dismissing Darth Malak's amp and the aid of Revan's Spirit because it's "unquantifiable" and "unknown," you seem to be ignoring your own words and labeling Exar Kun as immensely weakened when we don't know to which extent. Though, it doesn't really matter, because it was not necessarily Exar Kun's power that overwhelmed Luke Skywalker, but, like I said, that he was unleashing techniques that the Jedi had no way to defend against. Even the weakest illnesses can be lethal if you don't have any way to stop it.
This is true, although I'm not aware of any evidence that Revan had trained against tendrils either.
Revan's knowledge of Sith sorcery stretched across "a planet-size archive of Sith knowledge" on Malachor V, expeditions to Korriban, Nathema, and Yavin IV, and "centuries of knowledge" from Vitiate's mind. Given he was able to create the thought bomb and other immensely powerful rituals, along with the fact he could create
dark side aberrations, which seem to be similar in nature to tendrils since they are both physical manifestations of dark side energy controlled by his will, the likelihood of Revan being familiar with the technique is very high, and even if not, Teleportation should allow him to move out of harm's way.
Full power Exar Kun > Spirit Exar, and it's heavily implied that full power Exar > Spirit Kun + Kyp > JA Luke. You could argue that Luke was sort of blindsided by Exar from behind and hadn't faced anything of the sort before, but even taking this into account, Exar was still able to penetrate the defenses of a guy who defeated Palpatine.
No, it's not implied that. Anyway, again, Exar Kun was able to penetrate Luke Skywalker's defenses because he had no defense to call upon for his attacks. You even admit that in your post. In contrast, Palpatine simply assaulted him with his lightsaber, Telekinesis, and Force Lightning, if even, which Luke Skywalker knew how to defend against.
In contrast, what has Revan done to compare? Thrown around a strike team consisting of three or so decent Force users and a bunch of fodder?
As I already mentioned in either this thread of another, with the aid of Malachor V, he used the Force to influence the minds of the thousands (perhaps tens of thousands) on orbit around him, turning the tide of the battle against the Mandalorians and corrupting the minds of his allies, turning them toward the dark side and making them swear allegiance to him. He had since became "far more powerful." And while there's a lot of other great feats, I'd like to call back to the coalition feat since I think you are downplaying it. Darth Marr and Satele Shan are far more powerful than just "decent." For example, Darth Marr completely dominated Darth Lachris, who in return challenged a Jedi who performed the following feats:
https://www.youtube.com/watch?v=Z5IwR52UPB4&t=4m30s and
https://www.youtube.com/watch?v=Z5IwR52UPB4&t=699&t=11m40s . He was capable of instantly overwhelming her with telekinesis and then later rendered her unconscious with white Force Lightning. It's also worth mentioning that a comic suggests that Darth Marr's lightning was powerful enough to destroy Teneb Kel, who could perform stunts like this:
http://static7.comicvine.com/uploads/scale_super/14/147508/4303960-thanaton+ability+force+lightning+%283%29.jpg . And then Satele Shan is capable of absorbing lightsaber blows with her bare hands, ripping through large doors with just hand, conjuring Force Barriers great enough to deflect anything hex droids could unleash, etc. They're both among the greatest of an era with thousands upon thousands of Jedi and Sith. The fact Revan is completely ripping through them both, and others, ragdolling them around before pinning them against a pillar and making them unable to move or even call upon the Force, is absurdly impressive and is greater than anything Exar Kun has shown, in all honesty. It's a direct display of complete domination. In contrast, Exar Kun's is primarily that of Force mastery and understanding on rare techniques, which we know Revan already has in excess.
How so?
The Mandalorians, Echani, Rakata, Jedi, and Sith all respected him as the greatest warrior of the age, even as he massacred them.
That qualifies as him being an "elite duelist." 😬
Regardless, my point wasn't to leverage the advantages of Kun's style, but rather his feat of inventing a new one in what was at the time an unfamiliar weapon. I don't think Revan has done anything to match that level of technical skill.
According to The Jedi Path, almost all powerful Masters develop their own style based on preexisting techniques, which is basically what Exar Kun did. He also added new and unique elements, but it's not like other Jedi and Sith haven't done that as well. That's not to say what Exar Kun did wasn't immensely impressive, but reinventing a weapon (the saberstaff can date as far back as King Adas) and forming a style that comes with it should not, nor will not, be the determining factor of this fight when the style he chose to adopt alongside the weapon is, life I said, perfect for Revan. Unlike the other Jedi in the era, double-bladed lightsabers, including those that change blade length and intensity, are very prevalent in the Jedi Civil Wars. Another key part of his style is Trakata, which Revan has mastery in given he learned everything Kreia knew, which includes Trakata according to the KotOR Campaign Guide, and also has his Battle Precognotion which will allow him to basically fight in the future.