Many people in the comic book community strongly believe that Superman is the strongest character to exist. However, those in the manga/anime community believe that the character Goku from Dragonball Z is the strongest character to exist. These two communities have been arguing since the 90’s about who would win in a fight: Superman or Goku. Now, it seems almost impossible to compare two characters from two totally different realms, but some people have gone into real depth when talking about who would win.
Superman and Goku have some similarities that should be considered in this fight. Both characters are not from Earth, and both of their species have been proven to be much stronger than humans. Each has special abilities, such as flight and super-strength. Both characters are the protagonists in their series. Both have enemies that have pushed them to their limits.
Now, what differences do they have? Goku has the sense of Ki, which enables him to pull off the Kaioken, Super Kamehameha Wave, speed, and flight. He is a Saiyan, which means that he can surpass his “base form” and become a Super Saiyan, or even surpass that with Super Saiyan 2, Super Saiyan 3, Super Saiyan God, and Super Saiyan Blue God. Superman does not have the transformations that Goku has, but he does have x-ray vision, heat vision, cold breath, and is basically “invincible”.
In power levels, a human’s power level is 5 (based on Dragonball Z readings). Superman’s power level is 5 x 3125 because he can lift 3125 times what a human can, thus making his power level 15,625 (1). Goku’s power level at Kaioken x4 was about 40,000, thus making it seem like Goku would win out of pure strength. Goku also has been trained in martial arts, which means he has been trained to fight, unlike Superman (2).
So, in conclusion, based on Goku’s power level and ability to fight, Goku would win against Superman.
1 – http://www.wjunction.com/202-general-discussion-archive/107398-goku-vs-superman-scientifically-chosen-answer.html 2- https://9gag.com/gag/ao0n6ze/goku-vs-superman-the-truth-that-hurts-dc-fanboys