^ Yes, well implemented motion blur smooths the motion, but KZ SF uses some ugly radial motion blur while sprinting. Most of those pictures J_Allard linked are from sprinting (gun pointed down) which is when the radial motion blur switches on, most evident in that half blurred leaf. That has nothing to do with temporal blending. I guess to dramatize the run effect, same way NFS blurs and zooms the screen with turbo although you hardly go any faster.
Temporal blending can give you better results, while upscaling always suffers from a base softness on a 1080p display. On the other hand, variable sharpness has the problem that you're constantly made aware of the difference. If it's always the same upscaled you get used to the softness. KZ SF basically keeps showing you the difference between the two like a side by side comparison.
I don't know what's better (1920x1080 60 obviously, but alas). I'm leaning towards anything that can hit native display res, as that simply looks better on LCD. The effect is not unlike any video you ever watch. Even blu-ray blurs with movement, screenshots from moving scenes don't look any better. With video games it's always nice that the picture stays stable during fast movements. The effect can certainly be improved, I rather have they spend the time optimizing it so it can run in full 1920x1080, and turn that awful radial motion blur off. Or offer 1920x1080 30. At least single player is not compromised.
Anyway screw resolution, Dark souls 2 will be here in 6 days.
