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In my opinion that's a very good Unsu. Not too sure just why it is that people applaud on the jump. Not saying it's an easy move but there are equally 'tricky' moves elsewhere in the kata that appear to be less interesting for what ever reason.
I think you are seriously disengenious with your comment. That short is a training drill allowing the student to practice a drill. The club practice Shotokan Karate with instructors who are internationally recognised as instructors and competitors of traditional and sport karate. Review the website. .