True, but I doubt he will use bankai this early. Likely his shikai who's name he just learned. For all we know it's hax and not just raw power. Also i wonder about that kid's ability. Apparently he created Stern Ritter V. That's his own imagination not someone else's. He also affected Yachiru before mentioning what he had done to her so i really don't think he has to make you think for it to be reality. He did specifically say anything that he imagined not his opponents. But yeah, Zaraki's bankai is probably something epic like that. Goku look out!