It's often debated about which country has the most practicle and effective martial arts. America has boxing and wrestling. China has kung fu. Japan has jujitsu (which can be divided into judo and karate). Korea has kuk sool won (which can be divided into TKD, Yudo, weapons, ect, ect).
With the recent abundance of video evidence, it can arguably be said that Korea has developed the most effective fighting systems in the world. I would like to introduce another video to further support the notion.
This is a Taekwondo female using North Korean TKD to defeat a Kyokushin Karate man. Kyokushin is a devestating style. I am in no way presenting KKK karate as an in-effective sytle. In fact KKK and Kuk Sool Won share the same techniques. The main difference is fluidity and motion. TKD uses smooth fast motion and is done in a more natural way rather than KKK's "robotic" movements.
It's hard to determine style superiority based on a handfull of videos, but this is a special case. Females being the weaker sex cannot defeat a man of larger or equal size unless they have superior fighitng skills.
Although this example is of TKD, it should be noted that TKD is the "heart beat" of Kuk Sool Won. KSW encorporates many styles into it's "korean JKD concepts" but TKD is the soul.
TKD female vs. Kyokushin male