While fighting games are extremely technical in nature, they're also strategic.
I can only speak to smash really, but in smash your tech is not the most important factor. Your adjustments, reads, and mixups are. If you cover roll get up every time, you will lose. You need to, very quickly, understand your opponent's play style and capitalize on it. In addition, you need to be aware of when YOU are being exploited and strategically drop in mixups.
Many, maybe most, of the best players can't parry with high accuracy. But they don't need to either. They're the best because they're mind readers.
I can only speak to smash really, but in smash your tech is not the most important factor. Your adjustments, reads, and mixups are. If you cover roll get up every time, you will lose. You need to, very quickly, understand your opponent's play style and capitalize on it. In addition, you need to be aware of when YOU are being exploited and strategically drop in mixups.
Many, maybe most, of the best players can't parry with high accuracy. But they don't need to either. They're the best because they're mind readers.