Gamecube Adapter Input Lag (Raphnet vs Mayflash)

[eternal]

I was reading this post on Reddit about playing Melee on Dolphin without lag, and I was confused about how Native Support worked.

I understand that Dolphin can poll the Mayflash and official Nintendo adapters faster than it can poll the Raphnet one, but what does this specifically translate into in terms of input lag? I have an old Raphnet from a few years ago, not sure if that makes a difference.