I played
hundreds of hours of Dragonball Fighter Z with it, haha. Like, I'd race home from work to play that shit online. It actually helped bugfix some stuff in Steam Input regarding controller pairing because it was an edge case. Valve had me emailing them logs from my arcade machine when some stuff originally didn't work, and hats off to them, they actually fixed some stuff that really mattered to making steam work on my arcade machine.
Just to drive the point home about how robust Steam Input is, valve got THIS working:
With Steam. That's a for-real JAMMA setup. Steam Input is honestly universal.