You just pointed out that Gwonbub also looks like Karate. So, the similarities you pointed out to say they had to have come from Gwonbub could also have come from Karate.The 300 years old Korean Gwonbub pictures that I showed look like today's Taekwondo & Karate. Byungin Yoon taught a martial art called Gwonbub in Korea, which became a huge part of new Taekwondo. That suffices as proof cause the sport name is the same & the contents are the same. If there was any Karate school who contributed to the creation of Taekwondo, it is merely Kata culture being adopted by Taekwondo. Karate didn't invent nor have anything Korean Gwonbub already didn't have for the last 300 years. All the important Taekwondo techniques including rotation punching already existed in Korean Gwonbub, which Japan probably copied in creating Karate. Also, Byungin Yoon doesn't have lineage to Karate; he learned Gwonbub to teach the sport named Gwonbub.