Wow, well, this certainly puts some realistic perspective back on it!
"If all you want is to create a supersize version of a decent, un-cropped image, you can save substantial amounts of time – and even image quality – using Photoshop’s bog standard image resize.
We tried a few images – opening them, resizing them to 200% their original linear dimensions, and then layering an 'enhanced' resize on top. While there was always a difference between the two, the difference was rarely in Super Resolution’s favor."
"zooming into 100% showed a problem. The difference is almost unbearably slight, but the basic resize (left) shows more sharpness and fine detail than the far more processor and hard disk intensive Super Resolution file on the right. That makes the score '1-0' in favor of doing things the old fashioned way."
" ...it’s also mis-colored our image, dropping in some violet aberrations that now need fixing. Even if these weren’t here we’d still wonder whether Adobe’s new AI-powered tool was worth it. "