How Powerful Is Revenge Of The Sith Darth Sidious In All Star Wars media?

The title is meant to reflect my question. For example, how powerful would Sidious be in something like the EU/Legends included?

Episode III Palpatine's consistently touted as the most powerful Sith Lord to ever exist and, further combined with his Force knowledge and lightsaber mastery, would beat almost every Force user who came before. 

CuckedCurry wrote:

DarthAnt66 wrote:Episode III Palpatine's consistently touted as the most powerful Sith Lord to ever exist and, further combined with his Force knowledge and lightsaber mastery, would beat almost every Force user who came before. 

Not every force user " Almost" would be correct

8-6 6-4 4-2 2-0
Sidious is a tier 8 he has Dark Side immersion.

Many thousands of beings have Dark Side immersion and are on his level (Whole Rule of Two, Darth Ruin, Urtel Moren, Lord Odion)

He is also 60 so whereas Bane lost an edge from a decade after his physical prime (30) Sidious would have lost 3 edges but would perhaps benefit from the dark side's increased potency in the galaxy.

Ian Mcdiarmid was also told he was the "fastest fighter in the universe" being able to wield a lightsaber "a thousand times faster" than everyone else.

SnowxElf wrote:Ian Mcdiarmid was also told he was the "fastest fighter in the universe" being able to wield a lightsaber "a thousand times faster" than everyone else.

Five hundred times***

There are whole bunch of accolades but basically Darth Sidious is the most powerful Sith Lord of his era, and in the history of the galaxy up until that point. Only Sith Lord that might be more powerful is Darth Caedus, and that's because he came afterwards and was presented as nearly being a peer to Luke Skywalker at a point where the latter was definitely more powerful than Darth Sidious.

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.

-Taken from Vader: The Ultimate Guide

Yoda went after Palpatine in the empty Senate chamber, but could not defeat the most powerful Sith Lord in history.

-Taken from The New Essential Chronology

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.

-Taken from The Complete Visual Dictionary

When Yoda crosses sabers with the movie's arch-villain, he doesn't launch into a pinwheeling display of acrobatics, as he did against Count Dooku in Episode II. Instead, Yoda faces the dark side's fury, channeled by the most powerful Sith Lord in history. "Rob Coleman wanted Yoda to feel the power of his enemy," says Wheless, "like a force he's never dealt with before."

-Taken from Insider #86: Yoda's Right Arm

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.

-Taken from The Complete Visual Dictionary

The Sith Order, in hiding for a millennium, had awaited the birth of one who was powerful enough to return the Order to prominence. Darth Sidious was the fulfillment of that prophecy, capable of exacting the Sith's revenge on the Jedi for having nearly eradicated the practitioners of the dark side of the Force.

-Taken from The Complete Star Wars Encyclopedia

Darth Sidious proved to be the grim culmination of a thousand years of Sith philosophy and teachings.

-Taken 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.

-Taken from The Dark Side Sourcebook

In truth, Palpatine was well versed in the ways of the Force, having been apprentice to Darth Plagueis the Wise, a Sith Lord who was a master of arcane and unnatural knowledge. In true Sith tradition, Palpatine murdered his Master upon receiving the skill and ability to do so.

-Taken from The Complete Star Wars Encyclopedia

Sidious served for many decades as the apprentice of Darth Plagueis, learning diligently at the feet of his Master. Once he possessed all of Plagueis' secrets, he retired him.

-Taken from Insider #88: Heritage of the Sith

"My own Master, Darth Plagueis, made the grave error of teaching me too much, at which point he became unnecessary."

-Taken from Jedi vs Sith: The Essential Guide to the Force

Unknown to the Rebels, the Emperor had already laid the groundwork for the perpetual rule of his New Order. He had turned a Jedi into his new dark apprentice, the terrifying Darth Vader. Vader himself trained apprentices. And the Emperor created a corps of loyal, Force-skilled minions to maintain his rule. Most powerful of all, of course, was the Emperor himself.

-Taken from The Dark Side Sourcebook

Inside the spacious interior of the Galactic Senate chamber, Yoda challenged the Emperor. The two engaged in a spectacular duel—a contest between the most powerful practitioners of the Force’s light and dark sides.

-Taken from The Complete Star Wars Encyclopedia

It quickly became clear to Luke that this decrepit and seemingly defenseless old man was masterfully adept in the ways of the Dark Side of the Force. Indeed, as Vader had warned, the Emperor had become the Dark Side's most powerful expression.

-Taken from the Dark Empire endnotes

Even Ulic Qel-Droma would be envious of Palpatine. He had succeeded where all others had failed in taming the Dark Side.

-Taken from Dark Empire Sourcebook