Hmmm, that is an interesting article. What's the old saying, about the most succesful producers in Hollywood are the ones without any money?
Still, making this whole discussion slightly more relevant, with Disney footing the bill for a lot of the marketing, a nice healthy budget and 4 pre-established and successful franchise characters, I don't think Marvel need to worry about making back some money.
Also, Rock, that article is 6 years old. The business landscape may have changed quite a bit, for instance, I know it's much cheaper to distribue in Aus these days, even though the aussie dollar is pretty high. I would say there is a very good chance that percentage has changed.
Also, since that article came out, we pretty much really started hitting the stride of the 'Uber movie, the standard summer moving being in the hundreds of millions for budget. I'm sure that also changes things a little, and the aforementioned 3D.