I saw someone call it a closer offspring of Flash Gordon than Star Wars and the movie George Lucas was probably trying to make with the prequels. I could agree with that.I do not think it is a master piece (or as some have called it a "new Star Wars" or anything like that.
It's definitely the best Marvel movie, but like every other Marvel movie it's nothing more than a really cool summer blockbuster. Wouldn't even put it in the same conversation as (the original) Star Wars I could see potential in the franchise to create something bigger and more epic in scope (while still being fun), though.