Welcome to Marvel Answers. What would you like to know?

They are both in the small planet-moving or planet-busting range, so they are probably close strength-vise.

However, during the official JLA/Avengers crossover, Superman was able to stop Thor's hammer with a single arm (Something I have only seen the Hulk do before), and with great difficulty overpower Thor, despite less skill, and not using his super-speed. So I would give superman a certain edge.

Of course, Thor can increase his strength 20 times by donning his belt of strength and entering warrior's madness, which would give him a great edge in terms of strength alone.

On the other hand, Superman could likevise fly into the Sun and power up, but I don't know if it would increase his strength as much as 20 times.

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.