RPCS3 on Steam Deck isn't as bad, as it should be, given what we emulate. It depends on the games off course, I don't expect the most complex 3D games to run well. However this is just from what I read, I'm personally too scared to try it out.

I can't wait to try Playstation 5 emulation on Steam Deck. Hol' on, what? Well the PS5 is x86 too and the emulators aren't emulating the entire CPU. Obviously GTA 6 won't run well, if any, but there will be more simple games that will work.

For Switch 2, maybe simple games. The system has enough problems running Switch 1 games.

A Switch cost half what a flagship mobile phone cost and the Switch 2 has been immensely successful.