This is very tough. Overheat on Infernape and Arcanine is stupidly effective... but I'm going to have to go with Superpower. The Pokemon who use it are generally better. See Tyranitar and Scizor, and fighting is a fantastic offensive type and powerful coverage move.
You say Iron Tail won, but you bolded Submission and put winner in parenthesis next to it? --- Yo yo yo 1 4 8 3 to the 3 6 to the 9, representing the ABQ. What up, ******! Majora's Mask is overrated. People who agree: 24 (PM your opinion, good, or bad.)