The weapon wasn't finished. It didn't do anything until Thor got his hands on it. Groot was literally holding his own arm up before he cut it off and that became the handle.
Thor's hammer Mjolnir was defined by the fact that only the 'worthy' could lift it – so basically no-one except the god of thunder (and Vision, for some reason). But when it comes to the weapon's replacement, Stormbreaker – which Thor forges in Avengers: Infinity War – Groot is able to lift it too.
He traveled to Nidavellir and forged Stormbreaker, a weapon not only strong enough to kill Thanos but counter the Infinity Gauntlet and even summon the Bifrost. However, the weapon wasn't ready until Groot completed it by dismembering himself - and, in doing so, he became the first person to lift Stormbreaker.
Unlike Mjølnir, however, the weapon is not enchanted to prevent those deemed "unworthy" from holding it, making anybody with sufficient strength capable of using the weapon.
Making Stormbreaker Scene - Groot Lifts Thor's Hammer - Avengers Infinity War 2018 Movie CLIP HD
Why can Groot hold Stormbreaker?
This is a very simple answer that a lot of people don't understand: You don't need to be worthy to lift Stormbreaker! Unlike Mjolnir, Stormbreaker was never enchanted by the forefathers to only be held by the “worthy”. It was simply a powerfully forged weapon with near-indestructible properties. Cliff G.
Gamora is agile, hits hard, and shows no mercy, making her a real powerhouse among the Guardians. She's not as tough as Groot and Drax, but her exceptional skill makes her harder to hit, and she can use blades and firearms with equal skill in any battle.
Both weapons also appear to have a degree of sentience, with Stormbreaker apparently being envious of Thor's affection for Mjolnir, a characteristic director Taika Waititi attributed to the handle being made from the arm of the adolescent Groot, and carrying over some of that character's moodiness at that age.
Because it could kill thanos, is more powerful and thor panicked. Had he thought to call Mjolnir thanks would have gone to catch it and it would have knocked thanos on his bottom or something similar. But because thor was reliant on stormbreaker because it was more powerful he did it without thinking.
Many viewers have pointed out that Thanos was able to lift Stormbreaker without a problem, but this is because the ax isn't enchanted as Mjolnir is. Others believe Thanos lifted Mjolnir (although briefly) and have even argued that he would be worthy of doing so.
If Thor decides to use the power of lightning onboard the Asgardian refugee ship to fight the villain and his minions, he may accidentally damage the ship, or worse, even kill his own people. So, he chose to hold himself back, allowing some Asgardians to escape with Valkyrie (Tessa Thompson) and Korg (Taika Waititi).
Meanwhile, MCU Phase 4 saw Stormbreaker being wielded by Thor, Gorr the God Butcher, Love, and anyone else who was strong enough to actually lift and swing it. This is because of the respective origins of both legendary Asgardian weapons.
Beta Ray Bill's weapon, Stormbreaker, also has the same properties as Thor's hammer, Mjolnir, and includes the ability to transform into a cane when struck upon the ground and return Bill to his unaltered Korbinite form. Beta Ray Bill has a partner in the form of a Korbanite sentient warship named Skuttlebutt.
Although Stormbreaker and Mjolnir have very similar properties and powers, Stormbreaker is the most powerful weapon wielded by Thor so far. The obvious reasons are that Stormbreaker is the physically larger weapon out of the two, and not to mention that it is an axe, which could well be more dangerous than a hammer.
Why is Stormbreaker stronger than the Infinity Gauntlet?
Originally Answered: How is Thor's Axe, Stormbreaker, stronger than the Infinity Gauntlet? The simple answer is- Dwarven magics. That's pretty much the official reason given for why, anyway.
Actually everyone can lift Stormbreaker. Odin's enchantment was only for Mjolnir not for any other weapon which he would use in future. That is why Thanos was able to lift Stormbreaker and he was not worthy of Mjolnir.
But as it turns out, it was not just Thor's strength. After all, no weapon in existence should be able to stop the combined power of the Infinity Stones, no matter how powerful the wielder is. Turns out, Thanos was taken unawares. He had just incapacitated all the heroes who tried to stop him.
Why does Thor love Mjolnir more than Stormbreaker?
Mjolnir was his first weapon and he was very attached to it. After all, Thor had the hammer longer than Stormbreaker. Korg: Sounds like you had a pretty special and intimate relationship with this hammer, and you losing it was almost comparable to losing a loved one.
Why does Thor like Mjolnir more than Stormbreaker?
It may be weaker than Stormbreaker in the Marvel Cinematic Universe's lore, but Mjolnir carries the bigger legacy since it holds a deeper meaning to Thor and anyone was worthy enough to wield its power.
However, if you mean comics Thor, he can destroy planets bare handed. His powers over the storm arent dependent on a hammer. If you mean the MCU, then I would have to say yes. Eitri stated that Stormbreaker was created to surpass every weapon made before it, and Odin stated Mjolnir's power was enough to destroy worlds.
Thor had the element of surprise and a weapon capable of overpowering even the Infinity Gauntlet. Stormbreaker powered through the gauntlet's energy beam but left Thanos alive long enough to succeed, making his victory in Avengers: Infinity War all the more devastating.
Hulk triumphs, but it's more thanks to his tactics than superior strength, first uprooting Groot by attacking the ground, then using a boulder to fend off his powers and smash him to pieces.
However, Drax maintained his immense strength and thirst for violence, which he was always known for. On the other hand, Gamora's origin remained intact. But in a recent video exploring the changes in her comic character to her MCU version, it's revealed that Gamora is actually much weaker than she should be.
As we all saw at the end of Guardians of the Galaxy when Groot heroically turns into a wooden roll cage and sacrifices himself for his fellow teammates, he can grow back from almost anything. So long as there's some good soil and a pot around, he is basically immortal.
