As you might expect, Boyes shied away from discussions specifics about the business terms of the deal, but he did offer some general insight into how the partnership came to be and what it means.
"Well, I think the first thing was we've had a great relationship with Activision around Destiny," Boyes said. "And I'm a huge fan of that."
Sony's partnership with Activision for Destiny has been a deep one, with PlayStation fans getting all manner of Destiny content before Xbox players. Sony has even said that it is treating Destiny like a first-party game in some ways.
Boyes went on to say that Activision invited Boyes and his team on a trip to see Black Ops III in person. It didn't take long for Sony to be convinced that this was a game worth getting involved with.
Source: http://www.gamespot.com/articles/how-sony-won-call-of-duty-dlc-exclusivity-away-fro/1100-6428490/
