Of course not, it has a cult-like following that rivals Apple, the zealots would buy it even if they just repackaged the PS4 and called it PS5.
BUT it's going to be a LOT closer this gen. I suspect a lot of Xbox 360 owners that jumped to PS4 this gen will come back to the superior machine. I'm even seeing Sony fans talking about making the switch to the superior XsX.
ps4 vs one = Then ps4 were superior in almost every aspect.
Now you cant say that xsex is "superior", it is faster but not superior in every aspect.
PS5 have superior SSD to begin with.
I would also argue that digital game library + BC will be more important now, than from ps3/360 gen to ps4/one, so "real gamers" probably buy the brand they now have, to be able to play next gen + current gen library. Unless they keep old system and dont want to get to the next gen sequels.
If you want to talk about cult-like following, then you must look at Nintendo, not Sony. Nintendo sells shitty hardware with premium price, sells shitty boring games (like mario) and followers praise how good they are.
Sony is and have always been about the games and gaming experience, and if / when PS5 will continue to give that = few Teraflops aint nothing.
Also casuals have no fucking clue about specs, they just buy the shit that gets popular, like wii did. They dont buy the shit they dont understand, like wii u did.
The big picture matters and it is still long time to the launch, after both systems, controllers and GAMES are shown, then we see the amount of hype they generate.
It is just too early to claim that either side will beat the other into a pulp.