• It lacks a d-pad
• It lacks a right thumb stick
• The thumb stick it has is not capacitive nor drift free
• It only has one back paddle for each side
• Ergonomics of the deck are way better, at least for me
• It lacks the … button (although this is minor because Steam+a opens the same menu)

Don’t get me wrong, the SC 1 is a great controller, but the Steam deck is better, getting a Steam deck like controller would be awesome.