Huh, the publisher on Steam is 'PlayStation Mobile, Inc.' That's... interesting.
Anyway, I'm not sure I'm buying the reason. I mean, there might very well be truth to the reasoning, but I imagine it's also to test the waters to see whether releasing more games on PC would make sense.
I don't think this is a testing of the waters situation. They already know their games would do well on PC. HZD is one of the best games this gen of course it will sell well. I think this is an attempt to get more PC players to at the very least sign up for PSnow. You played HZD and want to find out what happened in #2? Well better get PS now or a PS console.