Welcome to Smogon! Take a moment to read the Introduction to Smogon for a run-down on everything Smogon, and make sure you take some time to read the global rules.
Don't lie Jibaku, Gyarados alone is a good enough reason to run Thunderbolt on Genesect 9.9 in OU AND UBERS....Its your only way of knocking out Gyarados, also +0 Explosion does not OHKO.
Also in Ubers, Thunderbolt wrecks Flying Arceus and is your best option for Ho-Oh, Manaphy in the sun :)
Gyarados deserves a second chance to rule Ubers since it can now learn Dark Pulse which 2HKOes Specially Defensive Mewtwo with the help of Choice Specs.
EDIT: Can you please find someone to work on the Ubers Offense article and update it...Ubers stall can wait till mid-December(after my exams) for me to do if no one else wants it :P