the movie did have flaws yes. and no not everyone can get black belt in traditional karate like goju ryu, shito, ryu, wado ryu, and shotokan ryu. nahate and shurite which was displayed beautifully by sensei naka... look up his kumite in JKA very amazing karate. this movie had great sepai, basadai...
i like machida's kumite but his kata sucks