Something to take note of is that this build is from Gamescom. Which was released in August, but required at least 3-4 weeks cert before being released, so possibly a July build.
Between July to this week the game has been undergoing heavy optimization for all platforms for release, so it's a bit pre-mature to think that these frame rates at this scene is going to make it to the final build. It's entirely possible that they couldn't get this scene working on the final build for any console and tweaked it so that it could for instance. But the build does manage to make it to 4K native resolution in lighter loaded scenes.
As for resolution and textures, this something DF normally covers; the only difference between then and now, generally X1 and PS4 ran the same settings for almost all games with the exception of resolution. There wasn't much difference to report on, so they didn't bother. Now that there are differences to be spotted they are now reporting on it. I don't think is a trend that DF is trying to start up. Most of the time they did resolution and frame rate differences.
Honestly, looking back, it's actually sort of silly how much we debated the differences back then. Aside from resolution there were basically none. I feel silly to even have engaged in it.
Politically though, now that there is going to be visual differences with the textures, I think people will accept resolution gate. It's not nearly as important anymore as people once thought it was.
I mean I used to read all sorts of replies that 900p was pure Vaseline and they couldn't see anything at all compared to 1080p. The exaggerations were quite major.
Now... both resolution and texture detail is operating at a completely different level, and frankly I think most people won't be able to see the 4K as much as they'll see the differences with the textures. It's going to be an interesting next 3-4 years, or at least until PS5 arrives.
Just remember, that DF offers a 4K service on Patreon.
https://www.patreon.com/digitalfoundry
If you really want to see the differences between the 2 without compression issues you'll need to pay $5 per month. Please do not share their 4K HQ videos however, but I think screen shots are okay. I think paying for the service makes sense if you are really into the games and the graphics.
I think you'll see an even larger discrepancy between the two platforms when you run it through their service.
You can see how much quality is lost between YT and DF's encoder
...
Sorry if this seemed like a plug. But the level of detail I saw on 4K HDR is what sold me on 1X