There's some teams online that beat 99% of fights, if you know what moves to make.
If you want to ruin the fun of building your own teams: https://www.smogon.com/forums/threads/4th-generation-battle-facilities-discussion-and-records.3663294/
"We live in a country Hasire.." ~ yosouf06
REVOLVER STAKE! http://img.photobucket.com/albums/v717/ChocoboMog123/AltEisenRChocoboMog.png