Iron Man Might Not Be In The Hulkbuster Armor, Here's Why

The Avengers: Age of Ultron trailer has been out for nearly two months, and there's still plenty to digest from those two minutes of action. One of the preview's main mysteries is the battle between Hulk and Tony Stark's Hulkbuster armor. What could possibly lead to these two throwing down in fisticuffs? Naturally Hulk is the first one to blame because of his anger issues. After all, he has a habit of going wild in the comics. However, now we may have another answer for how this conflict comes a...