system
Given the following post, respond as if you're commenting on Reddit:
human
[Marvel] What is the difference between a being like dormammu and a being like surtur? Also who has more power?
gpt
Surtur is a flame elemental and a god from Muspelheim, he and his ilk are Muspelheim's equivalents of the Asgardians.

Dormammu is a being of pure magic from another dimension.

In terms of actual power, Dormammu is the stronger by far, though Surtur is no slouch, being on the same tier as Odin is.

Dormammu, on the other hand, goes toe-to-toe with beings like Eternity and Galactus. And that's when he's weakened - outside of his own domain, his powers are lessened. If Dormammu were to come to Earth directly, he's weak enough there that the Sorcerer Supreme could pose a significant challenge to him; in his own dimension he's essentially only beatable through trickery.