For the sake of being on topic, I'll analyze each uber and give my opinion on how close to OU it is or if it should be OU.
Arecues.: No way, way too powerful, and the ability to be any type... Hell No!
Lol hell no
Darkrai: I think this can be OU, because after sleep clause is in effect, it's not that different from other special or mixed attackers. Yes,but needs testing.
It's fairly bulky, and has a nice movepool, great stat distribution, even with sleep clause its just a little too much for OU i think
Deoxy: all forms except of speed, should be uber, the first two have way too much attack, and the third one can out stall whole teams. No, expect the speed form.
Speed might be a little broken in OU, but I'd say useless in ubers. So i dunno.
Dialga: Offensive and Defensive sets that good, think Mixmence, but on way more scary. No
no...
Giratina: No way! With awesome typing and stats, it would be too much.No
no...
Groudon: Did you think Tyranitar was scary? Well meat his big Brother, Choice Banded/Sword Danced Earthquakes would ko a lot of things. No!
no...
Kyogre: choice scarf'd water spouts. Nuff said. No!
still no...
Latias: Latias would still easily set up with bulky defenses. No with soul dew, but I'm all for testing without soul dew in OU
Without dew, its eh in ubers, but its typing and movepool i think would still make it broken in OU
Latios: see Latias. No with soul dew, but needs to be tested without in OU
same
Lugia: Think cressilia, but with way better moves, defenses, ability, and looks. No
nuh uh
Manaphy: Seems okay to test. Ok, but needs testing
Again, movepool, stats, somewhat the ability but even regardless...
Mew: No! This thing has out stall whole teams, go physical and beat skarmory, go special and beat blissey, go mixed and beat the crap out of everything, baton pass, support, the team, and way more! Nope!
nope
Mewtwo: This thing has way to much special attack, diversity, speed, and over stat total to even be considered. No
no
Palkia: Good defenses, Offense, and Movepool. No
no
Rayquaza: This is what you get when you combine all 3 OU dragons together. It can DD and Outrage like Dragonite on steroids, Can choice specs to do tons of damage like Salamence, Can go Mixed like Salamence, and it can Sword Dance like Garchomp. Also its bulky so ice beamers need a lot of special attack to ko it, and it has 150 in both attacking stats. Of Course not.
no
Wobbufect: I can see this on stall teams. Needs to be tested, but I say yes.
no, completely screws over anything choiced, and a lot of ubers are somewhat predictable, it hurts
Also Xtreem, Have you ever even tried Mew in Ubers, its damn good, and I see it occasionally.