It's why I choose to use comparisons instead of paper specifications. But in defense of the PS5s SSD it seems that only Sonys 1st parties can achieve ridiculously short load times on it. I don't see 3rd parties trying to achieve that if it can't work on the XSX.
Things will get better for both but I doubt the differences between the two Will reflect the paper specifications.
So the summary is that the two have virtually the same frame rate but Xbox series x holds a higher resolution most of the time. No data to back up the resolution claim but the frame chart is about as identical as you can get for non scripted sequence.
This isn't even a proper next gen patch, it's just "enhanced backwards compatibility" and we know MS allows much more freedom doing this than Sony do currently, not worth getting your knickers in a twist over.