I'm not sure what kind of problem EAC is supposed to mitigate in a fighting game. The "threat model" so to speak is very different from other online games like shooters. Fighting games are fully deterministic and rely on both sides performing the same simulation, so if you were to modify your character's frame data to give yourself an advantage, you would desync and disconnect instantly.

The obvious candidate would be macros, but this is usually detected through other means (like checking if inputs are performed impossibly fast, or too consistently over a period of several games). Other common ways to cheat in fighting games (such as lag switches) aren't really the domain of something like EAC.