That was the point I raised. At first, wielding a magic hammer and its magic lightning generation, later retconned to be super-science, a hammer created in a neutron star and science-based lightning generation.
That leads to the question, where's the transition point, or phase, between Superman's vulnerability to magic and his invulnerability to science-based attacks, either an easy or hard target for Thor?
And, the complication is Arthur C Clarke's observation that sufficiently advanced technology can be indistinguishable from magic, and basically the same phenomenon.
Okay, back to playing Elder Scrolls.