@ g-force

That's like saying a car is not the wheels, just the engine. The definition of super resolution has long since been defined by the scientific community (aka registration + fusion + deblurring). So, there's no sense debating semantics and trying to sound clever.

You're also wrong about equating sharpening to deblurring.

Sharpening vs deblurring = unsharp masking vs deconvolution

Unsharp masking: a linear operation that increases the apparent sharpness of an image in ignorance of the manner in which the image was acquired.

Deconvolution: a solution to an inverse problem that increases the apparent sharpness of an image, but based on information describing some of the likely origins of the distortions of the light path used in capturing the image.

The fact that there is ringing is due to the approximate nature of the point-spread-function. It is actually a very common artifact, as can be read in numerous publications. This in no way changes the fact that the deblurred frame is much closer to the original high resolution frame than the low resolution source.