Shotokan Karate showing how to defend a knife attack.
That is a question of instructor, not the style. Both styles have excellent knife defenses. As with all martial arts what is taught, and its effectiveness is largely dependent on the knowledge and ability of the instructor. Styles can't fight. They are only methods of combat that must be taught, learned, and then used. If something is not taught, it can't be used. If it is taught how well it is taught has a strong influence on how well it can be done. If a student has learned something correctly and developed it properly, then it can be used effectively. If something is practiced for 20 years incorrectly, then that person has only become very good at doing it incorrectly.
Shotokan Karate - Knife Defense In 3 Steps : Knockouts
