system
Given the following post, respond as if you're commenting on Reddit:
human
[Marvel] What possible scenarios could cause Spider-Man and Captain America to intensely fight, ala Civil War?

These two characters seem like the two moral centers and hearts of the Marvel universe. But both also have notably different upbringings, experiences, perspectives, and personalities.

Could be a government action like the Superhero Registration Act, or it could be any situation they're involved in. Anything that would make them fight each other and mean it.
gpt
Peter has a soul. He has eye for people. Cap has eye for people but is more a “the good of the many” guy.

While cap won’t condone killing normally, he is a soldier. And sometimes.. what needs to be done needs to be done. Peter isn’t a soldier. 

These are grounds a conflict could be build on.