For all non-download tournaments (especially Type Expert), do the Pokémon the trainers use have an appropriate nature for what they are meant to do (such as Adamant nature for physical attackers) and are flawless (all stats with 31 IV)? I am wondering since natures are not listed in Serebii.net's page on PWT teams.
Black 2 Medals: 201 / 255, played for 203 hours
Recent medal: Balloon Conqueror
Progress: Trying to get the All Types Master medal
National Dex Completed within 100 hours and 20 days of playing
Favorite Medal: Supreme Challenger