What's the basis for that statement? There have been a few point-stop fighters who have successfully transitioned to world-class full-contact fighters. Not "many," but several. I'm not aware of one single person who got their start in Kyokushin or boxing or MMA who has gone on to be a world-class JKA karateka or WKF karateka. Please correct me if I'm wrong. Listen, point-stop is a really complex game. There's a lot of very subtle distancing, strategy, trickery that goes on. It's basically like epee fencing with bare hands, and epee fencing is a really complex, challenging sport. Pooh-pooh point-stop sparring for being less realistic than MMA if you want (I'd say that Shotokan and Kyokushin are both equally unrealistic, just in different ways), but don't pooh-pooh it for being easy.