I thought all xboxes were x86 hardware running some variant of windows under the hood?
Edit:
"The Xbox system software is the operating system developed exclusively for Microsoft's Xbox home video game consoles.[1] Across the four generations of Xbox consoles, the software has been based on a version of Microsoft Windows"
"Though initial iterations of the software for the original Xbox and Xbox 360 were based on heavily modified versions of Windows, the newer consoles feature operating systems that are highly compatible with Microsoft's desktop operating systems, allowing for shared applications and ease-of-development between personal computers and the Xbox line. "
I'm pretty sure the shared applications it's referring to there are UWP apps, which use a different set of APIs to traditional Win32 apps that are only available on full Windows versions. I looked into how Edge works a bit more, and it sounds like Microsoft made a special translation layer to take Edge's Win32 API calls and turn them into UWP ones. I guess games would be possible to run like this too?