It would be very close, but MCU Thor with Stormbreaker would win. Without Stormbreaker, Awakened Thor was able to put up a good fight against Hela.
Stormbreaker can summon the bifrost and Hela is stronger in Asgard. Thor can teleport her and himself and open her chest killing her, or cut off her limbs ir head.
Thor realized he was not going to be able to defeat her, and in an interesting turn of events, he ended up restoring Surtur's power by having Loki drop the crown in the Eternal Flame. This unleashed Ragnarök, which was the only way to defeat Hela as Asgard was her power source.
However, it does not defeat Hela herself. Climactic Moment: Thor realizes the only way to defeat Hela is to cause Ragnarok and destroy Asgard, her source of power. While he holds her off, he sends Loki to resurrect Surtur—who plunges his sword into the heart of Asgard, destroying Hela.
Stormbreaker has the additional power to summon the Bifröst, allowing Thor to teleport anywhere in the Nine Realms. Screen Rant has identified Stormbreaker as the more powerful of the two, based on this ability, as well as it being a much larger and edged weapon.
The hammer Stormbreaker is very similar to Mjolnir, made of mystic Uru metal and is nearly indestructible. Worthiness: Just like the original Mjolnir, no one can lift Stormbreaker who is not worthy. After the founding of New Korbin, there was a line of aliens and Korbinites all attempting to lift Stormbreaker.
So, while Stormbreaker grows roots in Thor: Love and Thunder, it is not another Groot being grown but an extension of a plant with the feelings of a teenager. Stormbreaker's jealousy comes from being born of a teenage Groot, and that's why it's so anthropomorphized in the film.
Odin's Valkyrior is pit against Hela because she wants to rule their realm of Valhalla where the honored dead go after they have been slain. The Demogorge, or the great devourer of gods, poses a deadly direct threat to Hela. While he can kill her, she also can be brought back to life by other gods willing to do so.
Odin has beaten Hela and had his son resurrected many times, and she has yet to succeed in taking retribution. These days, Odin is no longer the King of Asgard and no longer has the Odinforce, so, if Hela wanted revenge on the old man, now would be the time.
She has already killed countless Asgardians, who are generally around as strong as Captain America. In a fight, Hela would win 10/10 against Captain America. The Goddess of Death is superior to the first Super Soldier in every way, and has already effortlessly killed many Asgardians, whom are around as strong as Steve.
Superhuman Strength:
Furthermore, she proved easily stronger than her brother Thor, besting him in two of their three battles. Even after achieving his full power, Thor was still unable to defeat his sister, with Hela stalemating both him and Valkyrie with relative ease.
The firstborn child of Odin, Hela, wielded the power of Mjølnir before it ever came into Thor's possession. Hela used the weapon when she fought alongside Odin on their quest to conquer the Nine Realms. She later showed a preference for bladed weapons, such as Necroswords, that she was able to easily summon.
Hela Was Worthy Enough to Destroy Mjolnir
But the impactful scene in Thor: Ragnarok depicts Hela catching Mjolnir in mid-air before then crushing it to pieces. Odin previously told Thor the power of the Uru metal had no equal. Clearly, however, that was an overstatement, considering Hela destroys the hammer with ease.
It is safe to say that Stormbreaker cannot be destroyed by anything audiences have seen in the MCU so far. A power that Stormbreaker lacks is the "worthiness" enchantment of Odin. Anyone physically strong enough to lift and use Stormbreaker can use it.
Another plus in the Thor column is Stormbreaker. It is a mighty weapon with no equal, that can be used to defeat even the most powerful of villains, including the Scarlet Witch.
Not only can it resist the power of all six Infinity Stones, but it also has the potential to tear open entire planets. All Thor would need to do to use that phenomenal power is choose a world, open the Bifrost, and leave it open.
Hela is the Asgardian God of Death and the daughter of Loki. She has access to the power of life and death as well as ancient and deadly magics. Thor himself has never defeated Hela, and Aquaman would certainly find himself unable to defeat Hela.
If the Goddess of Death and the Scarlet Witch ever met in battle, the Goddess Hela would win. The victory wouldn't be as outright as some might believe because Wanda Maximoff is an incredibly powerful witch and would put up a good fight.
While her other Asgardian siblings, Thor and Loki, may display a tremendous amount of power, one cannot deny that Hela is the most dangerous among them. She could conquer realms if she wants to and could kill anyone whenever she pleases.
Storming the palace and sacrificing Asgardian lives, Odin stood between Hela and the throne. Unable to kill his own daughter, Odin defeated Hela and imprisoned her using his own power to keep her at bay in another realm for eons.
Hela Never Really Died During Ragnarok & Thus Can Appear In Thor 4. We never really saw Hela's death in the movie. All we saw was Surtur unleashing hell on Asgard and hela getting caught in the crossfire. The ambiguous nature of her death has led fans to speculate that MCU is saving her up for Thor 4.
However, Thor and Loki joins forces with the last Valkyrie and Bruce Banner to escape Sakaar and return to Asgard, where Thor engages his sister in battle while Loki secretly revives Surtur to initiate Ragnarök. Hela attempts to fight Surtur, but is ultimately killed by his Twilight Sword.
Absolutely yes. In fact, there are quite a few misconceptions about Thor's abilities. Even Thor himself was unaware in Marvel's Thor: Ragnarok film.
It's easy, Thanos managed to lift Stormbreaker because the weapon doesn't have worthiness enchantment on it, and practically anyone with sufficient physical strength is able to wield it.
Chris Hemsworth's last Thor movie, Thor: Love and Thunder gave fans got a clear scene of how Stormbreaker felt jealous and betrayed when the god of thunder went to Mjolnir. The scene clearly showed how weapons are also prone to emotional damage in the superhero genre.