Common sense also says both consoles will be build on the exact sam tech from the exact same vendor. So if Sony/MS desperately wanted to know that the competition can have, they would simply go to AMD saying "we want to hmake ev the fastest console one the planed, show us what you got", and then AMD could show them let's say a 64CU 2GHz 7nm GPU, and Sony/MS would be "cool, how much is it?" - "250$" - "nah, way too expensive, we have to cut it down to 100" - but they would already know what's the most capable hardware AMD can offer at the time, and they would know their competitor will also have to cut down the CU ad clocks to fit within a desired price point. It's like both Lambo and Ferrari wen't to Brembo for 420mm carbon-ceramic brake discs and 10-pot calipers - there's 99.99% chance they both would be shown the exact same kit, without actually knowing what the other company was doing. So back to consoles - there will surely some customization done on both sides, and some CU/clock differences, but about 90 of the APUs will be exactly the same, if there would be Intel and/or Nvidia being considered, then we could speculate whole day long, but in current situation AMD could as well build their own console and just let Sony/MS install their own OS nad software on it and call it a day.