Conspiracy? They said it was going to be the best version. They went from saying that the PS3 was a disaster and that Sony needed to scrap it, to announcing Steam for it and pushing it as their premier version. Valve stands to make a lot of money on console steam and that's exclusively available on 1 platform. There was no way that the PS3 version was going to turn out as anything but superior. They didn't intentionally gimp the 360 version any more than 3rd parties intentionally gimped PS3 multi-platform titles, but its naive to think that both versions were given equal effort.