I know that, what I still don't understand, and everyone refuses to explain, is why Smash netcode is supposedly so godawful compared to other fighting games.
As I said I don't have any other metrics except what I read about (what I believe was) Street Fighter, that allows the two players to be desynced filling the gaps with AI (and that was critiqued quite a bit too, since it allowed both players to win/lose the same fight without the other realizing).
No one bohered saying wich games do it right and why, and how Smash is different from it, in a coherent way.
All I got were joke answers and leading questions.
Honestly, I'm more and more convinced this is just another "Nintendo is DOOMED" level meme.
look up rollback vs delay based netcode. Street Fighter is comparably bad compared to GGPO games too but Smash handles it so much worse because the game doesn't even have a filter for connection quality so you're matched with people playing from shitty Wi-Fi from who knows where whether you like it or not.
Basically rollback at low latency feels like local, while input delay will always feel off and only gets a lot worse from there.