Ponies are so annoying with their comparisons. specially because they keep mentioning Nvidia as a reference point meanwhile the PlayStation has been using AMD GPU tech for years. If they are going to make direct comparisons to PC hardware they should look at Team Red's offerings.
The Pro was announced to have a 67% bigger die than the regular model, it struck me as a very specific number to use, so I think that this is because Sony is going to use a preexisting chip in the AMD stack that fits that description. The current PS5 has 36 CUs, if it is increased by 67% that gives us 60 CUs. Not surprisingly there is already a Radeon GPU that fits that criteria: The RX 7800 XT which compared to the RTX 4070 is close but the Nvidia card still outperforms it in some regards:
RX 7800 XT vs RTX 4070
Let not even start with the "it is as powerful as a 4090" nonsense:
RX 7800 XT vs RTX 4090
The 7800 retails for about $500 so it doesn't even break the bank. Sure, building a whole powerful PC is going to be more expensive up front but it doesn't have all the hidden costs and restrictions of a console.
It always comes back to Snoys being dumb cattle, they just want an idiot-proof box, using a PC requires thinking and that's too much of an ask.