What is the best or most effective martial arts/fighting style?

That is, what technique is the most complex and difficult to master, and what technique results in the most victories among competetive fighters? I have heard that ju-juitsu, esp. brazillian ju-juitsu is very effective because it emphasizes grappling and groundwork, which works wonderfully against opponents who tend to use alot of striking and hits. Statistically, or even historically, what type of technique has been dominant in the professional or even unprofessional fights? I know there is no one perfect style, but i seek an answer from a purely statistical and historical point of view. If you truly know, or have a good idea about this, please respond. Please refrain from answering if you don%26#039;t know anything about martial arts or fighting styles but feel you are qualified because you watch alot of anime.|||Judo is what I use and it has always worked for me,but every Martial arts has a strong and weak point.|||jeet kun do, or kick boxing works for me.