One possible reason could be a misunderstanding. Maybe there was some misinformation spread that made them think the other was a threat. For example, a villain could have framed Spider - Man as being a danger to the city, and Captain America, being the protector of the people, decides to take him on. Or it could be the opposite, with Spider - Man believing Captain America has gone too far in some mission - related decision.
If we consider a fanfiction where Spider - Man fights Captain America, Spider - Man might win. His spider - sense would allow him to anticipate Captain America's moves before they happen. He could use his webs to create distractions or even trap Captain America. Captain America is strong and a great fighter, but Spider - Man's unique powerset gives him more options in a fight. For example, he could web up Captain America's shield - handling arm, leaving him vulnerable. Also, Spider - Man can climb walls and ceilings, which gives him a different perspective in the fight and an advantage in terms of mobility.
One common theme is friendship. Since they are both heroes from the Marvel universe, fanfictions often explore how they become friends and support each other. Another theme is mentorship. Captain America, being from an older era, can sometimes be portrayed as a mentor to Spider - Man.
A recurring theme is the contrast between their personalities. Captain America is more of an old - fashioned, by - the - book hero, while Spider - Man is young and impulsive. Fanfictions often explore how they deal with this difference. Also, the theme of sacrifice is common. They both are willing to sacrifice themselves for the greater good, and this is often highlighted in the stories. For instance, in some fanfictions, one of them will put themselves in danger to save the other or civilians.
One great fanfiction could be about Spider - Man's internal struggle during the events of 'Captain America: Civil War'. He's a new addition to this complex world of superhero politics. He might be initially excited to be part of the fight, but then starts to question the motives of both sides. Maybe he tries to find a middle ground, using his unique perspective as a young hero who hasn't been jaded by years of superhero rivalries.
Perhaps the fanfiction is set in an alternate universe. Captain America is on a mission that goes wrong and he's targeted by a group of super - villains. Spider - Man gets wind of the situation and races to help. He ends up getting caught in a web of traps and attacks while trying to rescue Captain America. In a final act of self - sacrifice, he gives his life to ensure Captain America's safety. This would then cause a ripple effect in the story, with characters dealing with the loss and maybe even seeking revenge for Spider - Man.
There have been instances where Spider-Man and Captain Marvel have squared off in the comics. It usually depends on the circumstances and the overall narrative of the comic series.
There are some great storylines in Civil War fanfiction involving these two. For example, there's a story where Spider - Man's identity is at risk during the Civil War and Captain America helps protect him. This shows a different side of their relationship, more of a comrades - in - arms kind of bond. Another interesting one is when Spider - Man uses his intelligence to come up with a solution that could end the Civil War, and Captain America is the one who helps him implement it, highlighting their cooperation and mutual respect.
Well, in many Civil War fanfictions, Spider - Man and Captain America's interactions are really interesting. Spider - Man's admiration for Cap is clear. He's like a star - struck kid at times. And Captain America, he's kind of like a mentor figure who isn't quite sure what to do with Spider - Man. Their relationship can range from friendly rivalry to a more mentor - mentee thing, depending on how the author writes it.
Well, one possible plot could be that there's a misunderstanding. Maybe some bad guy has framed the Avengers for something really bad, and Spider - Man, believing the false evidence, decides to take them on. He uses his agility and web - slinging skills to surprise the Avengers at first. But as the fight progresses, he starts to realize that something is off and that they might be innocent.
There's 'Spider - Man and Captain America: United Front'. In this fanfiction, they start off with a bit of a misunderstanding but then quickly realize they need to work together. It delves into their different ideologies and how they find common ground to fight the bad guys. It's a really interesting read if you like exploring the characters' personalities.