The source of Wanda's unnatural abilities stem from a two-fold base; unparalleled mastery of actual magic and an innate power to warp reality. Due to exposure to mystic energies and forces at an early age, Wanda may reshape reality to various extremes.
In 2015, it was revealed in Uncanny Avengers (Vol. 2) #4 that she and Pietro are not mutants but humans who received superhuman genetics due to the experiments of the High Evolutionary. In Wanda's case, the High Evolutionary's genetic tampering made her more powerful in magic than she would have been otherwise.
If you look at it, Wanda's pain after losing Vision started her transition toward becoming the Scarlet Witch. However, she ultimately became Scarlet Witch during her final fight against Agatha Harkness in the final episode of WandaVision.
Scarlet Witch is able to access stronger forms of magic than Doctor Strange. The fact she's gained Chaos Magic allows her to manipulate realities and exhibit strong bursts of magic that can destroy everything around her.
Original Doctor Strange was more powerful than original Wanda. Original Doctor Strange, a. k. a, classic doctor strange could do literally anything and was one of the most powerful beings in Marvel.
While he may not have any superhuman abilities, Hawkeye is a crucial member of the team and one of the Avengers who can beat the Scarlet Witch.
It is not hard to conclude that Doctor Strange would be one of the most capable heroes to take on Wanda in a fight, given his expertise in the mystic arts.
While Thor is one of the strongest superheroes on the team, Wanda has unfathomable reality-warping powers that make her a deadly threat to anybody. The question is, who would win in a fight? Thor wins in a fight against Scarlet Witch almost every time.
The Verdict: Scarlet Witch Is Stronger Than Captain Marvel
That said, Wanda has an edge due to Chaos Magic and her reality-warping abilities. Her telekinesis alone could nearly kill Thanos faster than Carol's punches. Now, as the Scarlet Witch, she doesn't even have to move objects with her mind to get what she wants.
Without question, the One Above All is the most powerful character in all of Marvel Comics. How do we know this? Well, the One Above All is literally God. The creator of every single being in existence, the One Above All is the ultimate force for good in all the multiverses.
Her body has physical limitations and is only as durable as a human body can be. Her use of magic also drains her physically and is quite exhausting for her as is seen during Multiverse of Madness. She is vulnerable to all attacks and bullets and was easily injured by Proxima Midnight during the attack on Vision.
Wanda was still a formidable adversary, capable of tipping the scales in favor of Ultron (James Spader) or the Avengers, depending on who she was helping. Still, without her Chaos Magic from Marvel Comics, Wanda was not more powerful than Thor or Hulk.
Scarlet Witch Can Create and Manipulate Reality
Scarlet Witch can rewrite reality and make her a threat to the entire multiverse. In fact, WandaVision showcases more of Wanda's powers as she uses her Chaos Magic to create a pocket of reality.
1. Scarlet Witch. Scarlet Witch's current standing in the Marvel Cinematic Universe is a topic of debate. While her status as an Avenger is uncertain due to her recent villainous turn in Doctor Strange in the Multiverse of Madness, it's clear that she remains the most powerful among Earth's Mightiest Heroes.
Doctor Strange in the Multiverse of Madness proves without a shadow of a doubt that Wanda Maximoff, the Scarlet Witch, would and does beat Doctor Strange. Strange puts up a good fight, but it's not the good Doctor who stops Wanda.
Scarlet Witch is indeed powerful and has overpowered magical abilities that make her a threat in both the comics and the MCU. But the thing is that Dark Phoenix is a threat to the entire universe as her powers are cosmic-level. In that regard, it is easy to see why Dark Phoenix is the more powerful character.
In short, Wanda may be the most powerful, but Doctor Strange is more skilled and strategist. Even so, he would hardly be able to defeat his fellow sorceress by himself (something the new film makes very clear).
Wanda Maximoff has never truly been defeated, only "losing" to the combined forces of Doctor Strange, Wong, and America Chavez after realizing the error in her ways. For a time, Wanda posed the greatest threat to the Multiverse, going on a violent rampage on Earth-838.
Redditor u/megamindwriter points out, "Wanda broke Thanos' sword which is made from Uru, meaning she can also destroy Thor's hammer." Uru is a fictional metal that hails from Asgard, and it's ultimately what's used to create Mjolnir.
However, Odin and Mjolnir may still have the last laugh since, by negating the spell, the Scarlet Witch could potentially remove the hammer's ability to grant its wielders Thor's power. So, while she could technically lift Mjolnir, Wanda might just end up turning Thor's mighty hammer into an extra-heavy paperweight!
In Doctor Strange 2, Black Bolt's mouth was removed by Scarlet Witch. Panicked, Black Bolt tied to speak, causing his brain to implode from the power of his own voice, which was still destructive as ever. However, Black Bolt would likely have annihilated Wanda with a single word.
If Scarlet Witch can't use her devastating Hex powers while her eyes are covered, then there is one hero who is the perfect person to call for such a task: Spider-Man.
As a result of her Chaos magic, Scarlet Witch possesses more raw power than anyone else. But Hulk is physically the strongest.
It wasn't until she had possession of the Darkhold that she was able to realize the full extent of her abilities. Before Multiverse of Madness, she was strong but not that powerful. That's why the Infinity Stones-powered Thanos could withstand Wanda's attack in Wakanda and then defeat her and destroy Vision.
Hawkeye. On numerous occasions in the comics, Clint Barton has said he's just a regular guy with a bow and arrow. Unfortunately, his lack of power usually leads to him suffering injuries regularly and has led to fans deeming him the weakest member of the Avengers.