system
Given the following post, respond as if you're commenting on Reddit:
human
[Marvel] Why is Iceman a omega-level mutant?

Isn't his power pew-pew ice and ride on ice.
gpt
He controls heat the same way Magneto controls magnetism.

The take is that Bobby Drake always thought of himself as the youngest and weakest X-Man and never fully exerted his powers.  A rough equivalent would be a smart kid who holds back in school because he's afraid of being teased for being a 'teacher's pet.'  iirc a psychic link with the White Queen went deeper than anything Prof. X ever tried [because we know Emma has a problem with boundaries] and got Ice Man to unleash his full power.