Who is the best mma fighter?

It has to be between Georges St Pierre, Fedor Emelianenko, and Anderson Silva. Some of St. Pierre's notable wins include a unanimous decision victory over Karo Parisyan, a T.K.O win over Jay Hieron, a submission win over Frank Trigg, a T.K.O win over Sean Sherk, 2 wins over B.J. Penn, 2 wins over Matt Hughes, a T.K.O. over Matt Serra, and a unanimous decision victory over Jon Fitch. St. Pierre was submitted by Hughes early in his career and has been tko'ed by Matt Serra but has more than avenged his losses. Fedor Emelianenko holds notable wins include a T.K.O. victory over Heath Herring, 2 unanimous decision wins over Antonio Rodrigo Nogueira, a submission win over Mark Coleman, a unanimous decision victory over Mirko Filipović, a submission win over Tim Sylvia, and a K.O. over Andrei Arlovski. He suffered a T.K.O. loss to Tsuyoshi Kohsaka due to a cut and a no contest with Antonio Rodrigo Nogueira. Anderson Silva's notable wins include a unanimous decision win over Jeremy Horn, a K.O. win over Chris Leben, 2 K.O. wins over Rich Franklin, a submission win over Travis Lutter, a T.K.O. win over Nate Marquardt, a submission win over Dan Henderson, and a K.O. win over James Irvin. Silva's losses include a split decision loss to Luiz Azeredo, a submission loss to Daiju Takase, a disqualification loss to Yushin Okami, and a submission loss to Ryo Chonan. My pick for the best mma fighter is George St. Pierre.George has displayed amazing, well rounded skills against high quality opposition and is a finisher and has has killer instinct. Fedor has also displayed amazing skills but has not faced as many high quality opponents as George has. Fedor is also a finisher with killer instinct. Anderson has some quality wins and displays awesome muay thai skills. I believe that Anderson is not a mean person and is not a finisher. Anderson may be afraid of killing someone in the ring, he is definitely capable of doing so. Anderson also does not have as many high quality wins as Georges and Fedor do. So who is your pick for the best mma fighter?