NOTE: My above post had some errors regarding sources and thus I have decided to address those errors here.
@ jollyjim311
Excuse me?
You think that canonical sources like Darth Bane: Path Of Destruction and Star Wars: New Essential Chronology and references from other canonical sources are biased towards Revan then you are wasting your time! dude!
You can't just go around and argue against canonical stuff. It is not going to help your cause.
But I will make things more easy for you.
- From Revan's EU profile: "Aboard the Star Forge, Revan almost single-handedly defeated an entire army of Sith and Dark Jedi, a testament to his power in the Force and mastery of lightsaber combat."
Link: http://www.gamespot.com/pages/unions/read_article.php?topic_id=24266711&union_id=2511&print=1
More information: http://www.gamespot.com/pages/unions/read_article.php?topic_id=24260119&union_id=2511
Important NOTE: Gamespot gathers its information from its "Starwars Expanded Universe Union" channel.
NOTE: Revan's immense mastery of the force was put to test on Star Forge and he proved it by defeating all kinds of odds there. He encountered waves after waves of powerful Battle Droids, Dark Jedi and Elite Sith Troopers and he defeated them all. Malak himself acknowledged this fact and he believed that no matter what he throws at Revan, will not stop him and most it would do will just slow him down. Malak's commander was also aware of this.
- From Revan's EU profile: "Finally, Revan again confronted his old friend and apprentice, Malak, in an epic lightsaber duel. During their duel, Malak continually sucked the life force from Jedi held in stasis to replenish his energies. This, however, was not enough to defeat Revan, as he forcefully released the captive Jedi, allowing them to become one with the Force. At last, Malak was cut down."
NOTE: It is evident from this description that Malak - despite of all the impressive skills and powers he knew, failed against Revan. Revan was so powerful that he "force-fully" converted some of the captured Jedi to become with the force.
- From starwars.com (blogs section): "Eventually, Revan tracked Malak to the Star Forge and in a titanic duel Malak was killed.
NOTE: The duel between Revan and Malak was so immense that is was referred to be of "titanic" proportions in an official source and Revan won. Note that Malak was also a master swordsman and he has defeated the best known Jedi warrior of KOTOR period "Jedi Master Kavar" and proved his elite Light Saber skills.
- The personal words of Revan's mentor kreia: "Revan was Power. Looking in to his eyes was like looking in to the heart of the force, still you could see the souls of many Jedi that he would slay".
Note: Kriea says this to Exile in KOTOR II when describing Revan.
- From Darth Bane: Path of Destruction: QUOTE from Revan to Bane: "My time here is ended. Take what I have taught you and use it well."
Additional Spoiler: "Darth Bane—recently proclaimed a Dark Lord himself—traveled to Lehon in search of power enough to topple the existing Sith regime, the Brotherhood of Darkness. Once there, he discovered Revan's holocron and from it received training and instruction that, in his opinion, surpassed the entirety of Korriban Academy's archives."
NOTE: Darth Bane was not powerful enough to topple the Sith regime in his time. But Revan's knowledge helped him to achieve this mission. One of the things that Bane learned from Revan was the ritual of the deadly "Thought Bomb".
- From The Chronicles: (Revealed by XXXAcStylesXXX) "Revan pushed back and fed on a planet full of DS energy. Revan's will allows him to feed on (and not be consumed by) the power of the dark side."
Comments: This information demonstrates "Drain Knowledge". And Revan was so strong willed that he actually fed on Dark Side Energies.
- From The Chronicles: (Revealed by XXXAcStylesXXX) "And he draws dark side energy from space and uses it to over power and dominate the will of many many Jedi at once. Revan is able to draw upon the dark side energies of the planet below and use it during the battle, destroying the Mandalore and ending the Mandalorian threat. Simultaneously, more and more Jedi, unable to ignore the power emanating from the planet below, become corrupted by its influence."
NOTE: This ability shows that Revan can greatly enhance his power by drawing support from the Dark Side energies in the force, whenever he wants to. Revan can also lure Jedi to his cause through dark side energies and this shows his powerful "telekinetic mind domination" ability.
- Narration from "The One" - Leader of a Rakatan Faction: "You used one of those magical powers of yours to kill many of my warriors who were also accompanied by Rancor Beasts. Your power extended from sky and slaughtered all of my scouting parties along with the beasts".
NOTE: This is a direct quote from "The One" - Leader of one of the Rakatan Tribes - fighting for dominance over Lehon planet. He revealed this to Revan, when Revan met him again. The power that the "The One" was describing was Revan's incredible "Force Lightening Storm", which goes up high in the air and then spreads with rapid space killing any one instantly in its path. This power is not limited to any specific distance as it keeps on spreading until its wielder stops it.
- Revan as a Warrior:
"You, Revan, are the single greatest warrior of this age" - Narration by Canderous.
The actual concept art of Revan shows that Revan was a master of "Jar Kai" combat. He also demonstrates "Juyo" form when he was facing Bastilla and her companions on his ship. He also earned the reputation of "saber prodigy" due to his excellent dueling capabilities. Only "Kavar" and "Malak" were close.
Carth Onasi comments on Revan's saber skills: "I've been watching you wield that lightsaber, actually. Your finesse with it is incredible."
- Revan's Notable Victims:
Revan is known to kill many powerful warriors in his age. Some of them are:
- Mandalore: The Ultimate (He was the leader of the huge mandalorian army that Republic faced in Revan's time and he was the second most powerful mandalorian ever known. Revan alone killed him in a single combat and executed him in front of his followers.)
- Yusanis (He was the greatest Echani Warrior ever known in entire Star Wars Saga. He challenged Revan in a duel and Revan proved his superior precognition capability in this fight by killing him.)
- Darth Malak (He was a master swordsman and a very powerful force user as well. He was one of the most powerful Sith Lords ever known in KOTOR era and among Ancients. He was killed by Revan alone in an epic duel.)
- Darth Bandon (He was a promising young Sith Lord and Malak's apprentice. He even had knowledge of "Force Drain". And he was also killed by Revan.)
- Calo Nord (He was the most powerful Bounty Hunter of KOTOR era. He was also the most feared bounty hunter in Taris and the only person smart enough to survive the destruction of Taris on his own.)
- Bendak Starkiller (He was the best warrior in entire Taris planet and he dominated the dueling contests for 20 years and killed many warriors. He was ultimately killed by Revan in a pure dueling contest, as hundreds of people watched.)
Another quote from a Sith - Yuthura Ban, regarding Revan: "I hear he was a very powerful man. Very charismatic."
NOTE: Revan also survived an encounter with a Krayt Dragon and killed Terentatek creatures and Rancor beasts with ease.
You can learn more by exploring yourself.