you need to have dx2 cLSO installed.
Might work with other ISO though. As long as you can play the latest Kirby game, and the Zelda SS E3 demo, you are good to go
I think it's due to the fact that the combat is different and will take most player some getting used to therefore nintendo added and extra 3 hearts so players do not die to quickly :)
I'm gonna buy another Series X, but can't decide if I should wait till the Xbox June event (maybe they get discounted) or just buy now. What do you guys think?