The Los Angeles Times has a nice little article where they speak to Kenneth Branagh about the differences between Thor and Iron Man films. Here’s an excerpt.
“It’s how you dance pretty close to the edge to get the sort of modernity and the edge that ‘Iron Man’ has and the real sharp comic sensibility of those two men,” he said. “So it’s a different kind of dance.
“I think ‘Thor’ comes from a different place story-wise and character-wise. We have both Norse histories for Thor, hundreds of myths and fables told in many different ways, in addition to what Marvel has pillaged for the past 40 years or so to come up with their version of things, which sits in very strong structure, a really strong narrative structure.”
Source: The Los Angeles Times