That is entirely untrue the Gracie family is much like Bruce Lee or Fujin who created shotokan. The style is not what makes someone a good fighter it is their determination and is all personal. Ive fought many MMA guys and many other styles and won, but that doesn't make them inferior. Jiu Jitsu while requiring finesse and skill uses some brute force as well. If you take two peak fighters a wrestler and a jiu jitsu specialist then they will be at relatively equal terms it all comes down to the fighter. Even if the man who you train with ahs experience in both it doesn't give him the final say in which is better only which he prefers. I have taken kenjutsu, Shotokan, taekwondo, hapkido, and boxing in my life time. I prefer karate with TKD elements however that doesn't mean a decent boxer cant break my guard and pummel me into the ground. All in all I believe that while it is usefull for long term combat Soresu is at a disadvantage at one on one saber combat against a djem so specialist. Also hey man this is a philosophical debate based on two nonexistent sword styles in the end it all comes down to the duelist and that's just reality.