I’d say it’s one of the best consoles (if you want to call it a console) in relation to emulation. If you have very obviously legal copies of your console games they run incredibly well on the steam deck. Installed yuzu and configured it and got SSBU working 90%, multiplayer (even local) doesn’t work, at least the last time I tried it

Battery isn’t the best so it seems like it’s made more for steam link instead of natively running the game but my internet isn’t good enough so I tend to play on the couch tethered to a charge cable