The most powerful Thor variant is Ultimate Thor, who's real name is Thorlief Golmen. Golmen discovers he is the most recent reincarnation of Thor Odinson and begins his journey as the new God of Thunder. This version of Thor was less reliant on Mjolnir as a power source.
As he has All Father's powers + Power Cosmic or Rune King Thor is still the most powerful.
Conclusion: Thor
When it comes to the most powerful character out of Mighty Thor and Thor Odinson, the latter comfortably wins. Thor Odinson has proven himself as the most powerful due to everything that he has been through during his eight MCU appearances.
Is Jane Foster (female Thor) stronger than Thor Odinson if we include all her feats? No, Thor is. As far as I know Thor Odinson is the only to knock out the Phoenix Force.
Odin. Odin is basically Thor and all the other Asgardians rolled into one—though he's even wiser, more experienced, and minus one eye. As the default King of Asgard, Odin is easily the most powerful being in his realm.
They're both really bad but Zeus had the excuse of being corrupted and was under the influence of Pandora's box which made him act the way he did while Odin was always selfish and manipulative on his own naturally.
Odin has pretty clearly been shown to be demonstrable more powerful than the other gods. Odin's Odinforce has far outstripped anything Zeus's magical lightning bolts have ever done.
Thor, the god of Thunder, was undoubtedly the most powerful member of the original Avengers. His power continues to grow in the Marvel Cinematic Universe.
He gained many abilities. Godlike strength: Thor has limitless strength and can power himself even more by charging himself with lightning. He was able to bend Captain America's shield, then bend it back perfectly back to shape. He's the second strongest Avenger.
In a moment of wistful affection for his girlfriend, Thor asked his trusty hammer to always protect Jane, and in doing so unwittingly enchanted Mjolnir to do just that. Just like Thor's father Odin once enchanted the hammer to only be lifted by someone who is worthy, Thor cast a spell that let Jane use its powers.
Hercules / Zeus
While not cosmic (none of that on this list!), he can survive the vacuum of space and resist cosmic attacks. He ranks above Thor here because he's technically the stronger of the two. In fact, he is considered by many authorities to be the physically strongest character Marvel has ever created.
Having wielded the star-forged weapon for countless centuries, Thor and Mjolnir have quite the singular bond, despite the various trials and tribulations they've been through. And that bond is ultimately what proves that the Mighty Thor has surpassed his father, Odin.
Thor survives the Time Stone of time. While still aging physically, he retains his youthful appearance far longer than humans, barely changed after Thanos used the Time Stone to age by several centuries, and will only grow stronger the older he gets.
Mjolnir, the Mystical Uru Warhammer
Mjolnir was forged for Thor Odinson's grandfather by the dwarves, who used the core of a star and Uru metal to form the iconic hammer and imbue it with its immense strength and magic. It is nearly invulnerable and is capable of great destruction.
Over 12 issues, Thor is defeated multiple times by the five new Phoenix hosts: Cyclops, Colossus, Emma Frost, Namor, and Magik. At one point, Colossus is even able to smash Mjolnir away from Thor's hands, proving Phoenix is a strong force not to be messed with.
Thor is stronger than the Hulk
Now, with everything even, the two had one more fight. Unfortunately for Bruce Banner, he learned a lesson. The God of Thunder has always held back. Beta Ray Bill tells Sif that every time they fought, the Odinson held back because he saw someone worth saving and showed him mercy.
Thor is Immortal, Not Invincible
In Avengers: Infinity War, Thor revealed that he was over 1500 years old. It's clear that age doesn't affect him the way it does normal mortals, as with most immortals, he is aging at a slower rate. While Thor will eventually die, it will take thousands of years for it to happen.
Even more people don't know the hammer has a name. During Marvel Comics Original Sin story-line we saw Thor Odinson become unworthy to wield the hammer. During a fight, Nick Fury was able to utter a simple sentence in Thor's ear. Whatever was said to Thor caused him to be unworthy to wield Mjolnir.
Determining the strongest Avenger in the MCU is tricky since each brings something unique to the table, and Thor and Hulk are the top contenders in terms of sheer physical strength. However, regarding versatility and range of abilities, Captain Marvel and Doctor Strange are formidable opponents.
Tony Stark is the smartest of them all, having been responsible for some of the most incredible inventions to have ever graced the Marvel universe, including the Arc Reactor and one of the most sophisticated artificial intelligence systems known to man.
Why is Zeus the strongest god? Zeus is the strongest of the gods in the Ancient Greek religion because he has both power and intelligence. He is able to ensure that he is not replaced by another, more powerful deity.
Thor wanted Zeus and the other gods to help him fight Gorr the Godbutcher (Christian Bale), who—as you can perhaps guess from his name—poses a threat to all the gods. Zeus is uninterested in helping. Thor then kills Zeus using Zeus' own thunderbolt, which (frankly) feels like a bit of an overreaction.
Before the creation of the world, Búri, the forefather of the gods, appeared out of the ice, and his son Borr and the giant-daughter Bestla sired Odin and his brothers (usually named Vili and Vé).