Well I brought this up in IS, but I really don't think Garchomp is Uber with deoxys-e around, since the speed boost from dragon dance make users of that move more potent than Garchomp, who really plays more as a wallbreaker with a chance to sweep. Both dual screen and sweeper deoxys have turned the metagame into "break walls until I can sweep", and dragon dancers are much, much better at sweeping since revenge killing after a speed boost is a huge pain. In addition, with the metagame as offensive as it is, players generally have a higher number of pokemon who are faster than garchomp, making it significantly less of a threat.
With deoxys gone I believe the metagame would become somewhat more defensive again, and Garchomp would revert back to the ridiculous threat it once was.
Anyway, since we are not voting on Deoxys-E as well, my first instinct is to vote OU; however, it isn't far fetched at all to assume that Deoxys-E will be banned sometime in the coming months. Therefore, I am voting Uber.