As impressive as Vader's battle tactics might be, if he and Revan make a stand with comparable armies, Revan is likely to be victorious.
1 Darth Vitiate
Hands down the greatest Sith of all time, Darth Vitiate was one of the galaxies most feared and dangerous threats. His power was so great that he himself was a danger to every living thing that surrounded him.
Both are about equal in terms of experience and skills in the Force and Lightsaber, though Darth Revan is arguably the more powerful Force user and could hold his own against the Sith Emperor, Darth Vitiate, while Darth Vader can't really take on Darth Sidious himself. Because of that, Darth Revan wins here.
#1 - Darth Revan
Darth Revan was the most powerful and influential of all of the Sith Lords in the Knights of the Old Republic series. Their actions helped end the Mandalorian War and birthed the Jedi Civil War. Revan inspired many Jedi to abandon the Order and join their cause.
1 Can't Beat: Revan
Both of them have been responsible for the eradication of hundreds of powerful Force-users and both warriors were masters of telekinesis and lightsaber combat. Revan triumphs in this contest mostly through statistics. He was the greatest warrior of his time, while Anakin was not.
As impressive as Vader's battle tactics might be, if he and Revan make a stand with comparable armies, Revan is likely to be victorious. So, this point goes to Revan as well.
1 Darth Sidious
There has been no Sith, as powerful, meticulous, nor as evil as the Emperor himself, Darth Sidious. As previously mentioned, Sidious trained in the Dark Side by Darth Plagueis before Sidious killed Plagueis in his sleep, making Sidious a Sith Master.
He would go through many twists and turns in his life but it would be defined by his time as a feared Sith Lord. Revan is another Sith who is easily Ren's superior in just about every way. He was an extremely successful combatant and general.
Master Yoda has risen above all others to claim the top spot as the most powerful Jedi of all time and the true chosen one according to IGN's audience. He won pretty handily as well, as he was victorious in 89,756 of his 95,243 battles and had a win percentage of 94.2%.
In his prime, Revan was an unstoppable force on the battlefield, skilled in multiple forms of lightsaber combat, and regarded by many as the greatest warrior of his age. He accumulated respect from a vast range of different cultures from the Mandalorians to the Echani—the Rakata to the ancient Sith.
killed by an Imperial strike team, his dark side, like many Seth before him, refused to let go of life.
In Star Wars Legends and Canon, Galen Marek (Starkiller) is the only Jedi (other than Obi-Wan Kenobi) to put a beat down on Darth Vader/Anakin Skywalker.
Vader, the only power who overrules him is papa Palpatine. The reason why Vader obeyed tarkin was out of a sense of respect for him as a military leader, not as his superior.
Calo Nord. During the time of the old republic, he was a legendary bounty hunter.
Alongside Alek, the man achieved the rank of Jedi Knight sometime before the year 3964 BBY, and the two were widely acknowledged as being among the most promising members of the Jedi Order.
Revan is extremely powerful with the Force, and a true master of the Dark Side as a Sith Lord. Revan can use telekinesis, which he often uses to hurl heavy objects in battle, as well as crush and choke enemies, guide his lightsaber when he throws it and has even wielded two more lightsabers telekinetically.
In the Star Wars Legends continuity, the founders of the Jedi Order were Jedi Masters Cala Brin, Garon Jard, Rajivari, and Ters Sendon.
Biography. Legend had it that Yoda—a Jedi who became Grand Master—was trained by N'Kata Del Gormo.
Darth Revan is pretty much Rey's superior in every way. His Force powers are greater, his lightsaber skills are vastly superior, and he's defeated some of the most formidable warriors in the galaxy. It's doubtful he would have much trouble with her.
Intense fight but Yoda would prevail. It's easy to underestimate just how good Yoda really is since he has had so few chances to shine in the movies.
Top-tier Jedi and some Jedi with specific advantages against Vader (OT Luke, Obi-Wan) could beat him by themselves.
But the record Sith-killer is actually Darth Bane himself. Darth Bane, founder of the Rule of Two, killed more Sith than any Jedi in the history of the Star Wars galaxy. Thousands of years ago, a schism among the Jedi Order led to the creation of a new faction - one devoted to the dark side of the Force.