I faced a trick room team that had (from what I can remember) Shuppet, Eevee, Pikachu, and Clapearl(?).
I used a team of all ubers, and I wanted to see what the team was going to do, so I didn't play at the top of my game, and lost. Though, if that guy didn't have his last move be a critical hit, I would have won.
Oh, and some of you might have seen my awesome Team Rocket team on Wi-Fi that I slayed a team of Ubers with.
All I get to battle is eight year old noobs with their precious Dialga, Torterra, and the like.
I wish I could see a joke/underdog team..