Re: "is Thor 2 bigger or more grounded", I suspect both interview statements are correct. They are just talking about different things. Its "more grounded" in that they delve more into the Asgardians as people, both individually and as a society. I believe Taylor said he planned to show more of the "average Asgardian" as they live, rather than all the royalty and their heroic comrades. And its "bigger" in the sense that the heroes of the movie are still *gods*, fighting mythical foes in grand battles at fantastic locales.