Moshulel said:
Saying Revan was a Sith/Jedi is a mistake in my view, he went beyond allowing the Jedi teachings or the rage of the Sith to control him, beyond allowing himself to become a pawn of the force and took matters into his own hands.
Whether or not Revan was a true Sith by belief is negligible at best. However, Revan held the title of Dark Lord of the Sith, so he WAS a Sith, if by title only, so your argument is moot.
Kreia said that at the base of it all, whether as Jedi Knight or as Dark Lord of the Sith, those were just personalities, different aspects of what Revan truly was. During the Mandalorian Wars, Revan knew that what he had been taught as a Jedi was too constricting and limited for him to truly succeed in defeating the Mandalorians, much less the Sith.
He embraced the teaching of the Sith, knowing that he could go farther in his knowledge of the Force, furthur than those before him. However, the Sith aspect of Revan completely overwrote his Jedi personality. It wasn't until after he was mind wiped by the Jedi Council and was stripped away from his Sith and Jedi mentalities that the core of what Revan truly was was brough to the surface and he was able to reconcile both halfs of his true self when his memories returned.
However, saying Revan was not a Sith is inaccurate in the very least. His teachings were Sith in their very core and were invaluable to Darth Bane when the second candidate of the Sith'ari Prophecy reformed the Sith in what he thought the Sith should be, based on the teachings of Revan.
Revan may have been one of the ultimate Jedi, but he was a revolutionary Sith.
Also, to say Palpatine was only versed in the Darkside aspects of the Force are also inaccurate.
For those of us who read the "Revenge of the Sith" novel by Matt Stover, know that Palpatine was a stand out amongst the Sith because he knew the Jedi teachings and acknowledged them for what they were. He was a different type of Sith than what the Jedi had ever seen before because he followed Jedi and Sith teachings. This was also the reason he beat Yoda on Coruscant. Yoda acknowledged that in the years the Sith had remained in the shadows, they had evolved beyond their old ways and had become much stronger for it, while the Jedi were unwavering and unchanging, stagnating in the own beliefs and power, not evolving nor changing in any significant way, looking down at others who signified change.
The only aspects of the Jedi that Palpatine was not well versed in was the concept of the "Living Force" that was taught by Qui-Gon Jin, that Yoda, Obi-Wan, Luke and even Jacen Solo would all follow. The Living Force was a radical concept in the times before the Clone Wars and it was because of this view of the Force that Qui-Gon was never allowed to sit on the Jedi Council. In the time between the Clone Wars and the Galactic Rebellion, Qui-Gon, in spirit form, would teach Yoda and Obi-Wan this aspect of the Force as he understood it. This would later be passed down to Luke who would master it in the EU book, "The Courtship of Princess Leia".
Kriea foresaw the fall of the Republic and the Mandalorians in her final visions befor her death at Malachor V. Canderous would fail, but the Mandalorians would live on and become a sizeable force afterthe Rebellion and during the Vong War. She also foresaw the death of Jango Fett at the hands of Mace Windu.
In terms of Raw Force power, it isn't clear who the most powerful Force user in history is, though the likely candidates are Revan, Anakin Skywalker and Cade Skywalker. The three were exceptional with the things they could do and accomplish with the Force.
Luke is powerful, I'll give you that, being the son of ONE of the possible Sith'ari's will do that, but he had to work hard for that power, harder than anyother Jedi before or since, IMHO. Revan and Anakin were prodigies, Luke was a genius of hardwork. He practically built the entire Jedi Order from the ground up single handedly and faced opposition not only from living beings but those thought long dead such as Darth Sidious and Exar Kun.