It’s hard to believe that Hulkbuster Armor wasn’t always a part of Iron Man’s artillery – but here was the debut! The first time Stark pulled out the stops and created a suit of armor specifically to take on the Hulk! Not that it worked per say – sure there were a whole new slew of tricks up his sleeve – but ultimately, the armor was unsuccessful in stopping him.
At the end of WWH stark had a new Hulkbuster Armor – but it was still crap compared to the damage the Hulk can inflict. Stark really needs to admit that he has no idea how to beat the Hulk.