I stand by my assertion that's it's misleading. Not only would the camera have to occupy the same place, but all motion and animated effects would need to stop for the results to be literally identical. An Xbox 360 title doesn't "shift to native 4K" when the screen is completely black regardless of the fact that the upscaled results are indistinguishable from a native 4K black screen.
I believe everything else on the list has been asserted by someone involved with development as actually rendering to a native 4K frame buffer. When drawing a technical distinction accuracy matters.
Checkerboard rendering is not the same thing as up-scaling the rendering is just split up into smaller jobs , the final resolution is 4K.
You never see the smaller rendering jobs on the screen by themselves what reaches your eyes is the 4K final resolve of these smaller rendering tasks however it's done.