My own comparison vs Super Resolution using AVISynth and the Super Resolution trial plugin mixed with averaging other scalers.

My avisynth script:

LoadPlugin("F:\Median.dll")

LoadPlugin("C:\Program Files (x86)\AvsPmod\nnedi3.dll")

LoadPlugin("C:\Program Files (x86)\AvsPmod\eedi2.dll")

LoadPlugin("F:\avssr.dll")

AviSource("F:\Star Wars Blu Ray 540p-clip.avi")

base=ConvertToYUY2(matrix="Rec709")

orig = nnedi3_rpow2(base, 2)

lanc4 = Lanczos4Resize(orig, 1920, 816)

spline = Spline64resize(orig, 1920, 816)

bicub = BicubicResize(orig, 1920, 816)

bilin = BlackmanResize(orig, 1920, 816)

lanc = LanczosResize(orig, 1920, 816)

orig1 = eedi2(base)

lanc4a = Lanczos4Resize(orig1, 1920, 816)

splinea = Spline64resize(orig1, 1920, 816)

bicuba = BicubicResize(orig1, 1920, 816)

bilina = BlackmanResize(orig1, 1920, 816)

lanca = LanczosResize(orig1, 1920, 816)

superres = base.SR(1920, 816)

med1 = Median(lanc4, spline, bicub, bilin, lanc)

med2 = Median(lanc4a, splinea, bicuba, bilina, lanca)

Median(med1,med2,superres)