Who is stronger Superman or Thor?

In terms of the power to lift and move large objects, Superman has a stronger edge against Thor. Thor may have been able to move objects that weigh as much as planets, but the Silver Age Superman not only pushed actual planets out of orbit all the time, but even went so far as to move entire galaxies on a whim.

Who is stronger Thor or Superman?

But to answer your question, Superman is normally depicted as being stronger than Thor. But not by that much. In fact during the crossover event JLA/Avengers Superman describes Thor as being possibly his toughest opponent ever. Superman is generally only slightly more powerful than Thor.

Can the Avengers defeat Superman?

Few other members of the Avengers would be able to put a good fight against Superman. Nonetheless, most superheroes would be defeated by Superman when they face him alone. The only possible way by which Avengers could beat Superman would be with a team effort, and who knows if that would even work.

Can Superman be beaten?

Superman isn't invulnerable. He can be beaten if he fights someone strong enough. Doomsday practically killed him in the Death of Superman storyline and is the best example of this. Batman can build a suit of armor strong enough to "Pimp Smack" Superman.