system
Given the following post, respond as if you're commenting on Reddit:
human
[MCU] Why didn't Cap or Tony know who Thor was despite him being a major part of their Avenger dossiers?

Both of them got info packs on the Avengers, which is how they knew who the other was *and* how Cap was familiar with Banner's scientific work (and his Hulk form). Hell, back in Stark Tower Tony even sees a detailed feed on Thor and his encounter with the Destroyer, so we can't possibly believe they don't know who Thor is, right?

And even if we brush that off as a possible "oh maybe they don't know the name of the Asgardian kicking ass against the Destroyer", that raises further questions as both Fury and the Council *know* about Thor and know enough to confirm he isn't on Earth.
gpt
Thor appeared the first time out of nowhere, smashes up a base full of highly trained SHIELD agents, then proceeds to level a small town during a titanic fight with the Destroyer.  He then disappears again.

The second time he appears, he tears an extraordinarily dangerous prisoner from the two flagship superheroes and clear 'good guys', then attempts to disappear again. 

They're forced to assume that either a) he's a hostile, or b) he's a neutral entity that may accidentally destroy more towns/cities for whatever he's here for.