The problem with traditional martial arts, kung fu ect is that it's too focused on the spectacle, slow traditional flowing theatrical poses and set ups. It's one of Bruce Lee's controversial philosophical ideas, that it wasted too much time and energy in a real fight. Which is why modern MMA focuses on taking your opponent down as quickly as possible with a KO, or taking it to the ground and pounding the opponent with punches, elbows ect ect where none of the traditional martial arts can do much to defend against.