Isn't that just going backwards in technological advancement?
Wi-Fi is more
convenient than older connectivity methods (cable), yes. But is it
better? No.
With Wi-Fi, you can transfer data only one way at a time - upstream (you send data) or downstream (you receive data). The router switches between sending and receiving constantly, every moment.
With a cable connection, you can send and receive data at the same time, all the time.
In most applications this difference doesn't matter. But the more you have to have two (or more) users' data to be in sync, the more this difference becomes a factor. And in fighting games the expectation is that two players' inputs are synced to the accuracy of 1/60th of a second, i.e. one frame of game animation. Which is
extremely difficult to do in a game (which also constantly have to look good and keep the gameplay going, it can't pause to handle data (or it shouldn't, to be precise)), considering the hardware limitations and the fact that the developers can't control the network topology. Fighting games are absolutely the most data-sync dependant genre, followed by shooters. And it's this syncing of data where the download-OR-upload nature of Wi-Fi is a bottleneck. No matter how good a game's "netcode" is, Wi-Fi is a limiting the code to work at its full potential.
(TLDR): So don't be a bottleneck. Plug in that cable.
