Some of the Avengers might be immediately impressed by Miles' abilities. For instance, Captain America could admire his courage and sense of justice, much like his own. Iron Man might be intrigued by Miles' spider - tech and think about ways to upgrade it.
They would likely have a range of reactions. Yang would probably be impressed by the physical strength and training of some of the soldiers. The RWBY team as a whole would have to grapple with the idea of a military that doesn't rely on Dust or Aura. They might see the Earth military's technology as both a great advantage and a potential danger. If they were to react in a story, it could lead to some interesting crossovers where they try to learn from the Earth military or vice versa.
Some Star Wars characters might be quite amused by Earth fanfiction. For example, Han Solo would probably find the wild and creative ideas in the fanfiction hilarious. He'd chuckle at the strange interpretations of his character and the out - of - this - galaxy concepts that Earth fans come up with.
Some characters might be very intrigued. For example, Albedo, with his scientific mind, would likely analyze the concepts in the fanfiction related to Earth. He'd be interested in how Earth is depicted, its cultures, and technologies. He might even try to find similarities with Teyvat in terms of elemental powers or social structures.
Earth would likely have a mixed reaction. The scientific community would be fascinated by the Clone Troopers' genetic makeup and advanced weaponry. Civilians might be scared, thinking it's an alien invasion. However, some groups, like military enthusiasts, could see them as allies and want to cooperate. There would also be a lot of speculation about their purpose and where they came from. If the Clone Troopers came in peace, there could be a slow process of integration and cultural exchange.
Well, some Star Wars characters would probably view Earth military as primitive. In Star Wars, they have advanced energy shields and hyperdrive technology. However, they might also respect the Earth military's tenacity and the way they fight with honor. For example, Darth Vader might see similarities in the discipline of Earth soldiers to the Stormtroopers. He could also be intrigued by the concept of different branches in the military like the army, navy and air force as Star Wars doesn't really have such distinct branches in the same way.
Ruby would start to think about how the RWBY team could be more organized like the Earth military. She might see the value in having a more structured approach to fighting Grimm. Weiss would look at the Earth military's technology and wonder why Remnant hasn't developed similar things. This could lead her to question the reliance on Dust. Blake would be influenced by the way the Earth military works together. She might consider how the different faunus groups could cooperate better in Remnant. Yang would be amazed by the endurance and teamwork of the Earth military soldiers. This could make her more patient and less reliant on her own individual strength when fighting.
In 'rwby watches earth fanfiction', Ruby would be wide - eyed and eager to explore every new thing. She'd be constantly asking questions about how things work. Weiss would be shocked by the lack of a Dust - based power system but would soon start to admire Earth's ingenuity. Blake would be drawn to the underground subcultures on Earth, like punk or goth cultures. Yang would be amazed by the variety of fighting styles on Earth, from martial arts to boxing. They all would have to come to terms with the fact that Earth is a very different place from Remnant.