Thor's godlike power and magic-based attacks overwhelm Iron Man's tech-based defenses.
This is the classic Avengers argument: technology vs. divinity. And while Tony Stark's genius has produced armor that can stand up to incredible threats, Thor operates on a fundamentally different power level.
Thor's lightning is magical in nature, not merely electrical. This means Tony's standard electromagnetic shielding is far less effective than it would be against natural lightning. A direct hit from Mjolnir carries the force of a god behind it, and Thor's strength class is in the same tier as Hulk and Superman.
Tony's advantages are intelligence, flight maneuverability, and ranged energy projection. He can fight from distance and use his superior mobility to avoid Mjolnir strikes. His nano-tech suit can analyze Thor's attack patterns and adapt in real-time. In certain comic runs, Tony has developed specific anti-Asgardian countermeasures.
But in a straight fight without specific prep? Thor's combination of strength, durability, and magical lightning is simply too much for standard Iron Man armor to handle.
Tony's intelligence is his superpower, and he's built armor capable of matching gods before. The suit's energy projection, flight capability, and nano-tech adaptation give him tactical options Thor can't easily counter. Tony can fight from range, analyze attack patterns in real-time, and deploy specific countermeasures when he identifies weaknesses.
Thor is a god. His strength, durability, and magical power operate in a tier that technology struggles to match. Mjolnir can absorb and redirect energy attacks, meaning Tony's repulsors could be turned against him. Thor's lightning bypasses conventional tech defenses, and a single solid hit from Mjolnir would critically damage even the most advanced Iron Man armor.
Thor wins in a standard encounter. The divine power gap is too significant for Tony to overcome without specific anti-Asgardian prep. Tony's genius keeps him in the fight longer than most, but Thor's combination of physical power and magical attacks eventually overwhelms technological defenses.
Iron Man also fights
Thor (Norse) also fights