Re: "You ready for another Bout?"- The Thor/Chris Hemsworth Thread
I just watched Thor again. Thor refers to himself as "just a man" when he is vulnerable on Earth - which sort of implies a lack of godhood more than anything alien.
OTOH, Darcy and Jane's speculation "Advanced beings could have come through it before." and "A primitive culture like the Vikings might have worshipped them as deities." is more science-fiction-y.
I think Marvel are keeping it kind of ambiguous deliberately, but more science fiction than fantasy.