GV, you fail to show how Naga Sadow's Tangible Illusions which kill and alone almost took over the Republic and his ability to destroy a Star are not on par with DE Sidious.
I've already argued this before, a Great Sith Sword is much heavier than your average lightsaber, adding ontop of that the Ancient Sith are able to wield them as quickly and agile as a Sith/Jedi wield a lightsaber, you also have to consider the terrible powers that the Ancient Sith possessed, Sadow showed that almost by himself, he could destroy the republic and conquer the Galaxy, him losing was only due to the fact he was betrayed. Now this is the guy who isn't hesitant on betraying anyone, yet he feared Ragnos so much, that a Ragnos on his deathbed frightened him to the extent he didn't kill him, remember the Sith Tradition:
Whoever is powerful enough to kill their Master shall take their place.
Yet this soley means Ragnos was undefeated and the strongest of the Ancient Sith. Notice how starwars.com quotes:
Part I: A Golden Age
Time frame: 5,000 B.B.Y.
Period name: The Great Hyperspace War
It is a time of great expansion in the Old Republic. The JEDI KNIGHTS continue to shine a light of hope into the dark unexplored areas of the galaxy, and the mapping of hyperspace is encouraged and trade routes are discovered; many by intrepid explorers like plucky siblings GAV and JORI DARAGON, who plot uncharted courses in their ship Starbreaker 12. Meanwhile, on the far side of the galaxy, the Sith Empire has grown powerful through centuries of dark Force wielding and magic and the hundred-year rule of the greatest Dark Lord of the Sith, MARKA RAGNOS. The ruler's death leads to a power vacuum, and two leaders emerge at Ragnos' grave on the mausoleum planet of Korriban. After a bloody duel, NAGA SADOW and LUDO KRESSH's fight for destiny is interrupted with the unannounced arrival of Starbreaker 12, and the hapless Daragons are captured immediately.
Now we have been given sources on Naga Sadow directly and indirectly.
The direct sources are stated above. Now consider Exar Kun, yes he was a prodigy, and yes he was immensely powerful, but know how after he learnt Sadow's teachings to a certain extent, he was strong enough to batter down all the TOTJ Jedi Masters, he was able to walk into the heart of Coruscant and rescue Ulic and kill Vodo.
On another note, by your logic of Ragnos possessing Tavion and then being beaten by Jaden, you can also say Kun is weak enough to be destroyed by 12 Padawans, is that logical? No, your logic is not "infallible" if anything its fallacious.
GV, just as Numan and Lightsnake tried, your opinions are not fact and thus the universal agreement, is established fact so therefore, i suggest you stop trying to promote DE Sidious.