For one, Cal can't kill Darth Vader because of what's already been established in the lore and continuity that was created long before Cal ever appeared in the Star Wars Jedi franchise.
You fight him, kill him, and rush back and start the fight against Darth Vader as Cal. Cal is obviously not strong enough so he gets pushed aside and this is where you take over as Cere. The fight plays out the same, it looks like she has the upper hand but gets stabbed.
Obi-Wan faced off against Darth Vader four times and physically beat him twice while beating him through his Force development in a third fight. Obi-Wan Kenobi had the high ground that led to Vader's disfigurement and becoming the ultimate Star Wars cyborg.
Cal doesn't battle Vader again in Survivor, but given that Vader is able to overwhelm and kill Cere Junda in that game (a Jedi that we are led to believe is also more powerful than Cal at this point in his life), it seems reasonable to assume that Cal is significantly less powerful than Vader.
Cal Kestis Is The Strongest Canon Jedi Outside Of Star Wars' Movies & Shows. The powerful Jedi in question is Cal Kestis, the Padawan-turned-Jedi Master whose story is told in the Star Wars Jedi video games.
Within the franchise, Cal is a former Jedi Padawan and survivor of the Great Jedi Purge who, during the early reign of the Galactic Empire, lives in seclusion on the planet Bracca until an incident forces him to reveal his Force powers.
Throughout the Star Wars Jedi series, players see Cal strengthening his connection to the Force by remembering his training from Jedi Master Jaro Tapal during the Clone Wars. More recently, he was trained by Cere Junda, showing that he's been consistently training to improve as a Jedi warrior throughout his life.
Infil'a put up a fierce fight against Vader, almost killing him by throwing the already damaged Sith Lord off of a cliff. Despite severe damage to his suit, Vader survived the fall, and repaired himself with parts from Infil'a's droid, Arex.
Obi-Wan Kenobi soundly defeated Vader in Star Wars: Episode III - Revenge of the Sith and Obi-Wan Kenobi, and is easily one of the most powerful Jedi Vader ever faced. Vader and Obi-Wan were similar in swordsmanship and Force-sensitivity, but Vader's hatred of Obi-Wan often caused him to fight irrationally.
As Darth Vader, he was one of the strongest beings in the entire galaxy. But even then, he was never able to surpass his master, Darth Sidious. A Sith Apprentice can only become the master when they murder the one who trained them.
This isn't a fight, this is a curb-stomp. Kylo would absolutely never decline a fight with Darth Vader, a force of legendary power whose surpassing will certianly gain him a place among the most powerful of the Dark Side, but he is clearly outmatched in power.
The only Sith Lord who actually killed Vader, Darth Sidious kept his apprentice in line for over two decades. His true advantage was Force lightning, a power which would wreak havoc on the suit keeping him alive.
Yep. Darth Maul didn't really say or show straight up that he "feared" Darth Vader, but he openly stated his belief that he could not defeat Darth Vader without the help of the Jedi, therefore on his own.
Cal Kestis is more powerful than Luke given how easily he exercises his Force abilities. Not only does Cal possess the rare Force ability psychometry, which allows him to see an object's past by touching it, but he also lifts and pushes things without expending much effort.
Whether it's wielding unconventional weaponry or even tapping into the dark side of the force, Cal has done it all and still holds to his identity as a Jedi Knight.
Cal's life is at an interesting intersection in Star Wars Jedi: Survivor with Darth Vader looming as a constant threat. While a duel between Cal and Darth Vader would be emotionally satisfying, it may not be canonically satisfying and would not make a significant difference in the overall story.
In a Vanity Fair interview from 2005, George Lucas went deeper into why Anakin became much weaker as Vader. In the interview, he explained that because Anakin's limbs were severed and replaced by robotics, it was harder for him to use the Force than it was before his battle with Obi-Wan.
Darth Vader's loss of limbs prevents him from using force lightning, a common ability among Sith, making him weaker in comparison. Vader's reliance on his mechanical suit weakens him in battle, reducing his agility and mobility from his days as Anakin Skywalker.
So if Mace Windu fought Vader in a lightsaber battle, Windu would most likely win, but in terms of dueling skill alone, Vader takes the cake. George Lucus said that Darth Vader was the best duellist to ever live.
The Sith stayed in hiding for a thousand years, their survival unknown to the Jedi, as they plotted their revenge against the Jedi Order. The Sith remained a distant memory until the rise of Darth Sidious, a Dark Lord of the Sith, and his apprentice, Darth Maul, in the waning years of the Galactic Republic.
Galen Marek, better known as Starkiller, was the main protagonist of the Legends games before Disney bought Lucasfilm. He displayed incredible control of the Force, from moving a Star Destroyer to defeating both Vader and Palpatine in succession.
but how many total Jedi did he kill over the years? in canon, we can confirm that Vader killed at. least 22 Jedi during Operation Nightfall alone. most of these that we actually see were younglings, but he did kill several Masters, with the most notable being Shaq, Ti and Syndralic.
Cal Kestis and Starkiller come from vastly different places, but they may be two sides of the same coin. One was forged by Vader while the other one was forged by rebellion, but they both ultimately do what is right in the end.
After all, Cal grew up in the Republic before Star Wars Jedi: Survivor; he was trained in a Jedi Temple and thus had teachers guide him through youth. Luke may have been trained by top tier Masters, but his misunderstanding and failure to uphold a core tenet of the Jedi ultimately make him a lesser Jedi than Cal.
The fact that Kestis, who was shorter in his training than Ahsoka, was eventually able to defeat her is a good indicator that she wouldn't survive her fight with Ahsoka who even without her lightsabers was already able to defeat other Inquisitors.
