In short: they work, but they're crap. Standard pot based analog.
Only bonus is that the pcb has the buttons nicely labeled. How convenient.
Plastic shell is a straight up copy of the original. The plastic itself will probably yellow in a couple years. Buttons are stiff but work. Analog is kinda loose but doesn't grind.

Labeled button connections. Even the analog pots are labeled on the back.

DO NOT TAKE APART THE ANALOG EVER
Seriously I spent more than an hour trying to squish everything back in there. No lubricant in there so it will probably grind away to powder after a couple days of Super Smash Bros

fffffuuuuu
