Honestly I don't think 3rd party devs are being pressured by Sony to make games 1080p. I do believe they are afraid of Sony fans though. If CDPR lowered the resolution to 900p to keep a locked framerate on the Witcher 3 there would be fire in the streets and screamings of parity clauses and MS paying to lower resolutions. Sony doesn't have or need a "we have 1080p" slogan when you have the automatic backlash of a game not being 1080p. It was proven in that study that its one of the things their fans care about the most.