Originally Posted by Fat Unowninator
Why not use Defiant for the Acrobatics set?
Maybe because of Taunt? Defiant only helps when a stat is lowwered, whether triggered by ability or move. Otherwise, faster foes can outpace and, in turn, Taunt, set up or effect Tornadus to their own advantage.
Ex 1. Prioity WoW from Sableye.