DSOGaming writes: "Remember Kingdom Under Fire 2? You know, the action RPG that is said to run great even on dated PC systems? Well, even though this title comes from a South Korean developer and comes on both PS3 and PC, Sony’s home console is not the main development platform. In a shocking turn of events, Kingdom Under Fire 2′s main development platform is the PC, and the PS3 version is being ported from it (with some adjustments to its UI)."
Probably for the same reason Dust 514 on the 360 got cancelled. Microsoft isn't very fond of opening up too much its online service to third parties. That's probably what these developers wanted.
At some point I expect at least console syncing with players on two platforms by say logging into Origin/Steam with your PSN/XBL account and then seeing your Steam/Origin list pop up with friends and chat features to them over all sides of the networks. :)
Steam and Origin are only 2 things at the moment that could build into this, but I suspect Uplay from Ubisoft and other setups could happen and push for this as well. As it would require a 2ndary login to access a different backbone other than Sony or Microsoft on both sides. I think personally its a secret plan that developers actually want. As their games would actually last much longer this way with more players to play with you couldn't get bored.
Say typically a multiplayer game you love has run its course and less people play now so it takes 10 minutes to find a game through matchmaking. Say the same game on the other console platform has lots of players that still play it. If they were connected then it would take less time to find a match and enjoy a game. This will never happen with Sony and Microsoft doing it. So it has to have a 2ndary platform that both sides can sign into.