Iron Man 3 is one of the most successful Marvel Studios movies ever made, but it’s also one of the most divisive. The film scored over $1.2 billion at the worldwide box office, and thus far it’s only been bested by Avengers movies and Black Panther. It was one of the most highly anticipated movies of 2013, effectively serving as a sequel to the 2012 smash-hit Marvel’s The Avengers. Fans were eager to see how Marvel Studios would continue the MCU storyline now that the heroes had finally met up. Could they create a standalone …