IT's hard to say without a moveset, butttt...
Considering he's using all ubers, he's probably a n00b. Look at this team. Can you say dark weakness? 3 Deoxyses. You could probably embarrass this guy with no ubers on your team at all. Throw out Weavile, Ttar with Crunch (or any poke with crunch) and watch as his Deoxyses crumble. At this point you'll probably be up 6 to 3. Infernape (THE fire type of this generation really) can do away with Jirachi. So far, 2 pokemon are sweeping 2/3rds of his team. All that's left are the two dragons. Use Lucario's Aura Sphere (or Infernape's Aura Sphere) to hit Diaruga for 2x; He'll probably win that fight. Then comes Palkia; use Lucario's Dragon Pulse to finish that.
All in all, this is all you need to beat this guy:
Ttar
~Filler
~Filler
~Crunch
~Filler
Infernape
~Close Combat
~Flamethrower
~Brick Break/Focus Blast/Aura Sphere
~Fire Blast/Flare Blitz
(Flamethrower + Fire Blast + Aura Sphere for special infernape [lol], Brick Break/Focus Blast + Flare Blitz for Physical)
Lucario
~Aura Sphere
~Dragon Pulse
~Filler
~Filler
With just those three he's dead. If not, you have 3 other pokes to finish with whatever noobz he has left.