Honesty is always the best policy. Especially when it's funny. By the time you get to the third installment of a film, no matter how original the material, or tight the team is, there are going to be some inconsistencies, redundancies, and just general familiarity that piss people of. And that's just in the base case. If it's a superhero film, and you strip the hero away of his superpowers, you're going to feel the wrath. This is our wrath for Iron Man 3 starring Robert Downey Jr., largely as someone other than Iron Man.