Not sure, Platinum Games is an external dev so there's a possibility that they were unaware of those changes. But if that was the case, it would explain why Anarchy Regins was dealyed, maybe Koch Media thought it was better to release it in 2013. But not sure about the US, though. Koch Media likely has no say in the US market.
Interestingly enough, it's not just SEGA that's turning to Koch Media for publishing and distribution. Tecmo Koei, THQ and a couple of smaller devs are also turning to them for it.
Here's the messed up part, THQ and Tecmo announced their outsourcing to Koch Media almost a month ago. I googled it and barely any game websites covered it, SEGA does it and it's on every friggin' website literally minutes after the story breaks.