How much did the "similar spec" PC cost? And what were those specs?
I don't know ask Sony what they used during the presentation.
Sony said it was running in real time on a PS4...
But...
You have things like this:
http://www.dsogaming.com/news/watch-dogs-was-running-on-a-pc-and-not-on-a-ps4/
Here is the article where the screen shot was taken from:
http://www.dsogaming.com/news/unrea...pc-comparison-between-elemental-pc-ps4-demos/
The PC version was ran on a GTX 680 at 1080p 60fps, and the PS4 version was ran on a "PS4" at an estimated 1080p 30fps....
"As we can clearly see, the PC version features more particles effects than the PS4 version. Of course some might say that the PS4 version still features enough particles, however one of the things that really impressed us on the Elemental Tech Demo back in 2012 was the amount of its particles effects and the fact that it could easily handle them.
Lighting also seems to be better on the PC. Not only that, but pay attention to the Knights eyes. On the PC version, you can clearly see that his eyes are burning. That effect though is nowhere to be found on the PS4 version. Due to the lack of such feature, the Knight on the PS4 does not look as frightening as the one on the PC. As Reddits user ForHomeUseOnly also notes, there isnt a shadowed area in the corner wall area by the door, and it looks like there isnt any light bouncing going on, and missing shadowing in some areas.
In addition specular highlights or the shininess of the character - seem better on the PC. The PS4 version has very plastic and blown out reflections. Furthermore, the Knight seems to be getting less indirect lighting on the PS4 version. As we can easily spot, there is some blue indirect lighting from the enviroment on the Knights armor on the PC tech demo, something that is missing on the PS4.
Textures also seem of a lower quality. This can be easily spotted on the Knights armor, the ice chunks and the door. Ah yes, the door looks really awful on the PS4 version of the Elemental demo. The PS4 version also lacks the DOF effect that was present on the PC version, though some might be glad that Epic Games did not use it. Smoke effects are also decreased to a minimum, something that can be easily spotted in the second comparison shot.
You can easily tell that the PS4 version is basically a downgrade from the PC version of Elemental. As a means of proof, weve included both tech demos below. We should also note that Elemental was running on a single GTX680 on the PC. We also know that Elemental was running at 1080p and 60fps on the PC. Epic Games has not revealed the resolution and the framerate of the PS4 version, though we expect it to be at 1080p and 30fps."