The first question I had walking out of "The Avengers" last summer was, "How freaking awesome was that?" The second question - a bit more difficult to answer - was, "How is any comic book superhero movie ever going to be able to compete with that?" Pretty easily, as it turns out. "Iron Man 3" may not fly as high as its star-studded combo platter predecessor, but it still makes for a great start to the summer.