Hard lesson : upscale from 580 to 4800px is really difficult when pics are bad quality... And this Danni HotBox picset is really awful. Make a zoom on original pictures, and you'll understand what I mean
Yes, these are not such a triumph as 242/243. The AI can create some unrecognisable monstrosities if the source image is too low quality.
At least with the low-res versions your brain can interpret the imperfections using your expectations of Silvia's features, but when the AI enlarges them badly, your brain can't "unsee" the imperfections.
The problem is that we start from a low resolution version and by increasing so much, definition is lost and very different imperfections are appreciated.