It does help that cheating can only help so much in fighting games. I haven't thought about it much, but I guess you could have a macro that executes a devastating combo? Even then you need to be skilled enough at defense and hit confirming to even know when to press the "win the game" button. And most of the games I play have enough defensive options[0] that the player executing the combo might still need to react to something.
[0] E.g. bursts in Guilty Gear