...so? Just because there exist many different hardware configurations across consoles and PC GPUs doesn't whatsoever indicate that there will be a PC GPU with the same layout or CU count. As you say, the HD 7790 was close to the XBO GPU - but not the same! And as CU counts grow, the likelihood of matching layouts drops. Back when 14 CUs was relevant, it made sense that both the XBO and a dGPU had that many. Now, with the XSX at 52 (56, 4 disabled) and AMD removing their previous hard architectural limit of 64 CUs when launching RDNA, the closest PC SKU might have 40, 50, 60, whatever. Of course it could end up with 56 or 52, but that depends on how performance scales and AMD wants to segment their product stack. The point is that you are assuming a causal relation here that does not exist. The XSX GPU design is entirely separate from any related and similarly sized RDNA 2 PC GPU design; it was made by a different division and customized according to Microsoft's wishes. Expecting a similarly sized PC GPU makes sense - there's room for it in their product stack - but assuming a direct relation like saying "The XSX has 52 CUs, an XT version might have 56" as if they were the same silicon design makes no sense whatsoever.
