Here's the exact same method applied to part of a screenshot from the Star Wars blu ray.
Original vs downscaled + upscaled image
http://screenshotcomparison.com/comparison/125900
Original vs downscaled + upscaled image + sharpen
http://screenshotcomparison.com/comparison/125901
Original vs super resolution
http://screenshotcomparison.com/comparison/125902
Downscaled + upscaled image + sharpen vs super resolution
http://screenshotcomparison.com/comparison/125903
Just like the previous example, super resolution has more detail and less artifacts.