@You_Too
Here is a comparison of two frames between the Avisynth Spline64Resize and super resolution for the Star Wars blu ray. As before the 1080p sample was dowscaled to 540p, and then upscaled back to 1080p.
Frame 1:
1080p original vs Avisynth Spline64Resize:
http://screenshotcomparison.com/comparison/118932
1080p original vs super resolution:
http://screenshotcomparison.com/comparison/118497
Avisynth Spline64Resize vs super resolution:
http://screenshotcomparison.com/comparison/118935
Frame 2:
1080p original vs Avisynth Spline64Resize:
http://screenshotcomparison.com/comparison/118936
1080p original vs super resolution:
http://screenshotcomparison.com/comparison/118506
Avisynth Spline64Resize vs super resolution:
http://screenshotcomparison.com/comparison/118938
It seems to me that the super resolution upscale is much more detailed. The Avisynth Spline64Resize upscale looks more more blurry.