There are plenty of supposed Steam Deck killers available in the portable gaming space, from the Asus ROG Ally to the Lenovo Legion Go and all the Ayaneo and ONEXPLAYER devices in between. But none of them have managed to outright slay the dragon that is the mighty Steam Deck yet.
The Deck runs Starfield. It shouldn’t be able to yet here I am, zipping around space on the thing. Running Linux and how crazy effective Proton is, plus having trackpads to play Crusader Kings 3, it is hard to beat given it only cost a few hundred €s.