While inferior in any way to the first film, it's a decent enough sequel. The acting is still good the best coming from Robert Downey Jr who continues to bring charisma to Tony Stark, the music score from John Debney is good, the action's awesome, the directing and editing is very superb, and the cinematography is spot on. That being said, there are some problems. Despite the efforts of Mickey Rourke, his role as Whiplash could've been fleshed out more while Sam Rockwell's role as a generic businessman isn't interesting, Pepper Potts became very annoying and the pee joke in the film is so bad. Not to mention the story isn't as well-written as the original film despite the actors trying very hard. So, overall, not a perfect movie, but a decent enough sequel.