Weaknesses

Contrary to the beliefs of a lot of people, neither Superman or Thor are anything close to invincible.

Superman is, however, the only one who has a very specific weakness – that being Kryptonite. Kryptonite is the ore form of a radioactive element from Superman’s home planet of Krypton and he is weakened by its radiation. He is also more susceptible to magic than he is to most things – but not to the extent that it’s an actual weakness, which some people believe it is (he doesn’t crumble in the presence of magic, by any means).

Thor doesn’t have any specific weaknesses, but he is vulnerable to most of the same forms of attacks that Superman is vulnerable to – assuming said attacks are of a powerful enough level to hurt him.

Both Superman and Thor have been beaten down in the crudest fashion possible, for example, and they have both proven susceptible to mind-control – although they have shrugged off mind-control attempts through sheer willpower if they weren’t powerful enough as well.

All that being said, you have to give this round to Thor (though, again, we stress that Thor being a somewhat magical being wouldn’t make Superman crumble in his mere presence and Superman’s Kryptonite weakness is of no use to Thor at all).

Winner: Thor.