Lolno. I'm slacking off, I didn't even get to Taral yet. I burnt myself out in beta. Don't spoil it if I'm wrong here, just say I'm retarded or something.
Sidious was also capable of unleashing the full power of the dark side. Or did you forget that him and his master through meditation were able to throw off the entire galactic balance of the force.
As for Revan, I would put him on the level of Vader, Tyranus, and Windu. Beneath Yoda, Sidious, and Vitiate and soundly below Luke.
Finished Revan book. What in the blazes he was thinking, when he decided to absorb force lightning with bare hands? He did use lightsaber on first lightning bolts and then he had to show off...
Honestly Revan is likely to be beyond all of those mentioned above, as he was able to resist the corrupting influence of the Sith Emperor of his time, for three hundred years. All the while this ancient Sith was inside Revan's mind studying the Republic's defenses. Also Revan was able to influence him to delay his attack for years in that position.