I mentioned to a colleague at the office that Avengers did well to get released ahead of this because in an action comparison it is no contest. (and I liked Avengers).
Very well done, characters were actually developed to a certain degree. Hoult, Theron and the
were well written in as close to being over the top as the story demanded. Surprising that some of the non-actors were able to do their tasks competently. Models, pro wrestlers, etc. Thought Hoult and Theron in particular were awesome
I would also suggest that the Mad Max character is collateral to the story and your witnessing the events through him if you will. It's consistent with the Road Warrior and Thunderdome movies to that extent (as compared to a James Bond movie where he becomes the center of the story).
Very well done. I expect it to do very well at the box office.