Iron Man 3 doesn’t feature any of the other Avengers, or Nick Fury showing up, or any of those world-blending conceits that the Phase One films had. You have to keep in mind that Iron Man 3 had been in the works for almost a year, year and a half before The Avengers was released. We’re sticking to the vision for these films, and showing once again that these characters are just as interesting alone as they are together.
So will this turn out to be a good move or a bad one? Who knows.I guess it makes sense not to have other avengers in the film. Iron man doesnt really have any enemies in his comics that could stand up to people like thor or hulk. Altho i do think a little reference to the fact that the avengers exzist would be nice.