Stun Gun has beat tough guys, i see him around 15 or so. He dominated Paulo Thiago. I still don't count the Maia loss because it was a freak accident.
He has some great wins, that's why I rank him ahead of Thiago Alves and Dan Hardy but... he was finished twice in his last four fights. Also he outwrestled Paulo which is good but that's Paulo weakness, Siyar walked through him. At the end of the day I believe Siyar is going to KO him in the first and that is another reason why he is ranked ahead of him.