Switch 2 will not be nearly as powerful as the PS5 and it won't matter in almost every case. Switch 2 will probably be around PS4 level (or maybe a little bit better). This is fine, because almost every PS5 third party game also runs on PS4. There are only a handful of really big budget PS5 games that couldn't be made for PS4, and it will likely be that we continue to get only a small handful of these each year going forward.
Having said that, there will still be a decent amount of PS5 games that won't come to Switch 2 even though it would be powerful enough. GTA V was a PS3 game and it never came to the Switch.
curl-6 bet me that PS5 + X|S sales would reach 56m before year end 2023 and he was right.
My Bet With curl-6
My Threads:
Master Thread, Game of the Year/Decade
Switch Will Be #1 All Time
Zelda Will Outsell Mario (Achieved)
How Much Will MH Rise sell?
My Bet With Metallox