Just so you know, there's no way you can tell which interface someone else is using unless they themselves communicate it to you. For online head to head the opponent's swing analysis always shows PCI in the middle regardless of where they were actually aiming, so it can give off the appearance of all of your opponents center-swinging. Just because you always see the PCI in the middle does not mean every single one of your opponents is using directional. If your corner pitches are constantly getting hammered then it's almost a certainty that they aren't.
I think Cardinalbird5 did a youtube video about that topic at some point.