system
Given the following post, respond as if you're commenting on Reddit:
human
[Marvel/DC] Do other planets have as many supervillans as Earth does?

I realize that other civilized planets usually have one or two supervillans, but Earth seems to be filled with them. Do other planets just not have as many villans as ours, or do we just not see them because they stay away from Earth?
gpt
Other planets have similar issues, but earth is in a rather odd situation where there's a lot of advanced alien technology and magic on the planet due to it's cosmic significance but not very advanced technology in police and military hands. Other worlds tend to either have fairly low tech and so only face the odd demon summoning or monster from beyond which can be handled by shaman, or are more advanced and so any inventions by geniuses can be handled by police who also have advanced weaponry and demons and other magical monsters likewise can be beaten down much more easily.

If the police and military are super, being a supervillain is a lot harder. 

Notably, they don't stay away from earth. We often see and face alien supervillains. If you're in a high tech society and you want to be a supervillain you generally can't in your homeland because local police and military will shoot you to death with plasma weapons. You can go to a lower tech world like earth and beat on people there.