I feel there is a connection between arts, if not at the technical level, then at lease at the development level of health and strength. You mentioned "twisting motions" of which are also in my kata based art, and are there to directly involve tendon and ligament development which in turn adds more power from within our bodies. I would agree that each and every move within kata is not geared toward self defense, but each and every move serves a very important function. The practice of martial arts produces a power that is unique to specific techniques within any given art. Could this be what instructors at the KuKKiwon are eluding to? My intent is to dialog, and share, not to win a war on words. Thanks in advance.