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mutantsushi said:
What those devs prompted me to think was: there will be rather different optimization paths for x-platform vs. native PS4 games.
The former will not really play to PS4's strengths as much, which is stuff that XBone simply cannot attempt,
but PS4's compute unit and GPGPU thread advantage (ROP to some extent, although with the 64bit GCN as mentioned, that may not be as hard a limit as previously thought)
all will be able to gain some advantage over XBone, including framerate but potentially other aspects of rendering.
You can see in their convesation the XBone dev is talking about reducing the quality of certain things, or relying on main memory to keep up, and flat out ignoring some lighting techniques...
The fact that the XBone dev talks about using GPGPU compute to enable parity, while XBone's GPU is both gimped in compute units and GPGPU threads seems like that is pushing hard against their limit,
the PS4 doesn't need GPGPU for that, but has plenty of it on call for whatever they want to use it for (including efficiencies mentioned by the XBone dev, which just allow the PS4 even more bandwidth for other things).
It's sad that people who can't remotely follow this stuff get distracted by things like 1080p or even frame rate and treat them as fixed points of comparisons,
they are merely one side effect of GPU power, while things like shadows, lighting, tesselation and AA are other usages.
It's hardly that it is IMPOSSIBLE for XBone to EVER have 1080p games, it is just that PS4 has more power to deliver richer experiences by whatever metric.

so by that logic, the original Xbox delivered richer experiences.. by whatever metric.. than the PS2. Right?
oh yeah, almost forgot.. and the Gamecube, that also delivered richer experiences.. by whatever metric (lol).. than the PS2. Right?
Hmm. How about the Dreamcast, that obviously delivered richer experiences.. by whatever metric.. than say the N64.
See.. I get where you're going.
You're saying that the 'more' powerful consoles have always delivered richer experiences.. by whatever metric.. than the lesser powered consoles.
Yeah.
You couldn't be more right.