The Norse God of Thunder Thor may be best known for wielding the magic hammer Mjolnir, and while it gives him ultimate power over thunder and lightning, his God-like strength and durability actually comes from his armor. Thor's gauntlets and belt hold their own mysterious magic that grants the strength, durability, and immortality that define the Norse gods in the Marvel universe — all without any pesky worthiness tests.
In Thor vol. 1 #277, by Roy Thomas and John Buscema, King of the Norse Gods, Odin, confides to Lady Sif that he created a clone of his son in case Asgard needed defending and Thor wasn't available. The clone held the essence of Thor's powers, encasing them in his belt and iron gauntlets. In the heat of defending Asgard against Loki and his instigation of Ragnarok, Odin created a way to replicate Godly powers that could be wielded by anyone. Odin, however, refused to create another Mjolnir, holding true to his promise of never recreating such a powerful weapon. The gauntlets and belt were given by Loki to a human cameraman named Roger, giving birth to Thor's eventual adopted brother Red Norvell.
Harnessing godly powers would be a massive upgrade for just about any being in the Marvel Universe, and while Thor's hammer may be a more enticing bit of weaponry, it pales in comparison to the power granted from his gauntlets and belt. Unlimited strength and immortality make harnessing the weather look like parlor tricks, but how each piece of weaponry functions is what truly makes the difference. Odin's enchantment on Mjolnir makes it possible for those deemed "worthy" to pick it up and use it. Worthiness is a tricky concept in the Marvel universe, with even Thor falling out of the magic hammer's favor. Only a select few can use the hammer, but those same rules don't apply to Thor's gauntlets and belt. Any human or Asgardian who wears them is imbued with Godly power, so those enchanted items are infinitely less limited than Mjolnir.
Since the gauntlets can be used by anyone, however, it also makes them much more dangerous than Mjolnir if they land in the wrong hands. Villains in the past have taken Thor's hammer, including Magneto and Red Hulk, but they weren't able to use its powers. If those same villains were able to get their hands on Thor's armor, however, it would make them some of the most dangerous beings in the Marvel Universe.
The Mighty Thor may be one of Marvel's strongest beings, but his powers are uniquely tied to his gear. While this makes Thor much more vulnerable than most Godly beings, his longevity and high standing is a testament to the strength of his weaponry. And while Mjolnir is what defines Thor as the God of Thunder, his true power lies within his iconic armor.