Some of the "senior members" of the stunt community can chime in here but, if I am not mistaken, Richard Kornmeier's win makes the ST 60 motor the longest running, top winning streak of any powerplant that I am aware of.
That is, from it's first top level win, to it's present World's victory, it is numero uno!!
P.S. Congratulations to Igor Burger on his "Max" taking all the marbles.