Best case scenario would be if they both are damn near equal.
Then, we could just judge them on their membership features, games and overall value to the gamer.
I will cop a PS5 day one if they come through with some tactical type exclusive multiplayer options. (that's why I like Xbox b/c of Halo, Gears and Xbox live)
Now, if Socom is brought back from the dead...
Either way, Series X is day one for me no matter what as I've stated before.
Edit:
Also,
fukk 8K. I don't even want to hear about another level of resolution that'll limit these console's ability to really maximize and perfect a current and viable resolution.
4k and 60fps or better and I'm good.