In the 10 years between Men in Black 2 and Men in Black 3, Hollywood had made great inroads in international distribution, especially in China, where MiB 3 made $77 million.
If the new MiB does even better there, the movie could pay for itself in China alone.
Today China is an even more important part of the global box office.
On the other hand, Men in Black 3 is actually the highest grossing film in the franchise globally, because the international numbers for the film were much higher than the previous entries.