Not to start any flames but the single P4 image looks far more "photo-realistic" to me than the P6 figure which betrays all sorts of "hyper-realistic" CG conceits. Throw some film grain on the first image, touch up the HVS and I might believe it was a photo, throw some canvas or paint texture on it and I might believe it was a painting... no matter what you do with the second one it is clearly CGI. I understand though that each medium will develop its own standard for realism and its own conventions of stylization... in art school this was called "being true to the materials". I work exclusively with FireFly renders now but I think people need to consider their terminology, I use "render-realism" in place of "photo-realism" for this type of IBL/AO pore hugging detail type work.