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22%
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11%
67%
Millions is over exaggerating especially considering the fact that at the most there's 10,000 Jedi. And wasn't his blaster blessed with Dark side magic? If so, Sidious could probably quite literally yank out the power of the blaster. Sidious has a statement calling amulets and spells as quaint trinkets that just hinder the force user in the dark side and should just be used as stepping stones to eventually have their power.
Nadd has nothing on Sidious. He's apparently an uber marksman, but that isn't doing shit to Palps. He's a capable duelist and warrior, but again, not fast enough, and not skilled enough for Sidious. His talents with Sith Magic are impressive as well, but he's hardly an equal to Sidious in that regard either, even with Force-Enhancements.
(Credit to ROTJ Vader & NewGuy01)
Star Wars Insider, Kevin J. Anderson, upon asked if he ever intended his Sith to be stronger than the OT sith: "No. Exar Kun, Naga Sadow and the others are on a firmly lower tier than Emperor Palpatine."
"Obi Wan Kenobi and Yoda were the only Jedi left in a position to do something about the disaster. Yoda went after Palpatine in the empty Senate chamber, but could not defeat the most powerful Sith Lord in history."
-From The New Essential Chronology
"Plagueis made a soothing gesture and explained in great detail what had taken place. Concluding, he said, "He threatened, too, to place you out of reach.". All the while Plagueis spoke, Palpatine was storming through circles on the narrow path, shaking his head in anger and balling his fists. "He can't do this!" he snarled. He hasn't the right! I won't allow it!". Palpatine's fury buffeted Plagueis. Blossoms growing along the sides of the pathway folded in on themselves, and their pollinators began to buzz in agitation. FourDee reacted, as well, wobbling on its feet, as if in the grip of a powerful electromagnet. Had this human truly been born of flesh-and-blood parents? Plagueis asked himself. When, in fact, he seemed sprung from nature itself. Was the Force so strong in him that it had concealed itself?"
-From Darth Plagues Novel
"And then there was Palpatine, of course: he was beyond power. He showed nothing of what might be within. Though seen with the eyes of the dark side itself, Palpatine was an event horizon. Beneath his entirely ordinary surface was absolute, perfect nothingness. Darkness beyond darkness. A black hole of the Force."
-From Revenge of The Sith Novel.
"Darth Sidious proved to be the grim culmination of a thousand years of Sith philosophy and teachings."
-From Jedi vs Sith: The Essential Guide to the Force
"When the Sith finally emerged from a thousand years of watching and waiting, they numbered—in accordance with the tradition set down by Darth Bane—only two. The most powerful of these was Darth Sidious, an ice-cold, diabolically calculating genius equipped with the strength of the dark side of the Force, as well as an enormous wealth of Sith artifacts, equipment, and knowledge."
-From the Darkside Source Book
"Vader imagined the power that could be his if he crushed Palpatine and established his own rule over the Empire. But first, he would need his own apprentice. By himself, he could not hope to defeat the most powerful Sith Lord the galaxy had ever known."
-Vader: The Ultimate Guide
"Beyond the vision of the Jedi Knights, somewhere within the darkness, the greatest master of evil ever to use Sith power bides his time. As his strength grows, his plans begin to shape the course of the galaxy, and his snares await the unsuspecting."
-The Complete Visual Dictionary
"The Sith have waited millennium for the birth of one who is powerful enough to return them from hiding. Darth Sidious is that one—the Sith's revenge on the Jedi order for having nearly eradicated the practitioners of the dark side of the Force."
-The Complete Visual Dictionary
"The feeling had begun as a faint stirring in the Force, like the tiniest ripple of something moving slowly through deep water, far away but drawing steadily closer. It intensified, until it felt like the Force itself was boiling, heaving like the sea in the grip of an enormous storm.
"I sense a presence..." Maul warned Savage, "A presence I haven't felt since... Master!"
-Shadow Conspiracy
"To most eyes the man in those simple robes of rough cloth was unremarkable, just another being making his way in the universe. But to those who could feel the Force he was anything but ordinary. To them, he was a dark sun blazing with power that was simultaneously hypnotizing and terrifying to behold. Darth Sidious had come to Mandalore."
-Shadow Conspiracy