The difference should be that XB fans had a hard time praising XB1 because when it came to gaming, it really had nothing over PS4. That partially flipped when XB1X launched though, but PS4 Pro still had a clear games and price advantage.
Now you're going to have games, that to gamers in the flesh, will be slightly more visually pleasing on XBSX across most titles, but will be slightly faster and snappier on PS5 across most titles.
One group will praise the visuals, the other will praise the speed, when in reality, the difference between both will be minimal most of the time. A write off or a wash basically. That won't mean each console has small advantages, but what's going to matter are the games, services, and prices.
I'm actually not sold yet on the PS5 SSD or its clock. I will expect the XSX to be just as snappy as the PS4. They both have fast SSDs and the PS5 will run into diminishing returns.
But in the end it's gonna be meaningless. As I've said long before we knew the specs; the XSX could have double the specs of the PS5 across the board and it would still lose if their games output stays as uncompetitive as it has been the last 3 gens. And there is no reason for me to believe that it will improve in any way.
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