They aren't pretending anything. They are merely stating facts.These statements from CDPR always strike me as odd since they have already confirmed a 900/1080 split between the consoles. They've openly said that there will be benefits on PS4, I don't get why they seem to want to pretend they aren't doing anything with the extra hardware.
That people don't understand that there are no "specific graphical features possible only on the PS4" is not CDPR's fault.