I looked for at thread on this subject, but couldn't find one, which surprised me (hope I didn't mess up).
With Outrage being made available to other pokemon, Garchomp has become far more counterable and I think moving it back to OU should be considered. In particular, Ryperior, who with Impish and Max Def/HP, Max Atk. Adamant YacheChomp can only 3HKO with Earthquake (92% chance of 2HKO with Life Orb), and Tauros, who outspeeds Garchomp and who can only be 2HKO'd at min Defense/HP even with Choice Band. (Assuming Rhyperior has Solid Rock and Tauros has Intimidate). Both Impish Min. Atk Rhyperior and Adamant Max. Atk Tauros OHKO min HP, min Defense Garchomp with Outrage if they pack Choice Band. BulkyGyara is only 3HKO'd by Outrage from max Attack YacheChomp and has a shot at only being 3HKO'd even if Garchomp packs Life Orb, and can outspeed and OHKO Garchomp with Outrage after a Dragon Dance. Gyarados also has the option of Ice Fang if it's known that Garchomp doesn't have Yache.
Clearly, a Garchomp back in OU would have to contend with threats it didn't have to before, and now has to choose between carrying Life Orb/Choice Band (or Haban Berry, I guess) to deal with these new threats, leaving it open to Ice attacks, or carrying Yache Berry, leaving it open to Outrage. In light of this weakening of Garchomp's position, I think its tier should be reconsidered.
With Outrage being made available to other pokemon, Garchomp has become far more counterable and I think moving it back to OU should be considered. In particular, Ryperior, who with Impish and Max Def/HP, Max Atk. Adamant YacheChomp can only 3HKO with Earthquake (92% chance of 2HKO with Life Orb), and Tauros, who outspeeds Garchomp and who can only be 2HKO'd at min Defense/HP even with Choice Band. (Assuming Rhyperior has Solid Rock and Tauros has Intimidate). Both Impish Min. Atk Rhyperior and Adamant Max. Atk Tauros OHKO min HP, min Defense Garchomp with Outrage if they pack Choice Band. BulkyGyara is only 3HKO'd by Outrage from max Attack YacheChomp and has a shot at only being 3HKO'd even if Garchomp packs Life Orb, and can outspeed and OHKO Garchomp with Outrage after a Dragon Dance. Gyarados also has the option of Ice Fang if it's known that Garchomp doesn't have Yache.
Clearly, a Garchomp back in OU would have to contend with threats it didn't have to before, and now has to choose between carrying Life Orb/Choice Band (or Haban Berry, I guess) to deal with these new threats, leaving it open to Ice attacks, or carrying Yache Berry, leaving it open to Outrage. In light of this weakening of Garchomp's position, I think its tier should be reconsidered.