I definitely agree with bunn-bunn (a.k.a Azumarill) for A+. It has a great defensive typing and STAB coverage, that's only resisted in OU by Tentacruel, Venusaur & Ferrothorn. It has fighting coverage for Ferrothorn, so it only has two 100% counters. The choice band set hits hard + fast, and the belly drum set makes it hard to wall after one turn.
A+
I'm not sure if I agree with Skarmory. It does its job well, but it can often be outclassed in a way by Deoxys. Sure, there are things to differentiate the two, but I'm not sure Skarmory is right for A rank. Plus, any special attack will cripple it.
A-
I already said my thoughts on this, but they were very quickly turned down. I'd say A-, but it seems all the
important people think A. I can agree.
A/A-
I'm on the fence about this one. Psychic and flying moves have both increased in usage lately, at that makes it hard for Conk to survive. Also, most Psychic types use Psyshock, which easily gets around Assault Vest. On the other hand, it gets nice recovery, priority to make up for the low speed, and the ever crippling Knock Off. I could see it going either way, but I'm leaning towards A-.
A/A-
With the huge increase in usage of Bisharp, I personally think Latios should stay A. It's easy Pursuit and Sucker Punch bait, and it gives Bisharp a Swords Dance whenever it Defogs. It's also easily trapped by Ttar, who's another A rank Pokemon.
A
This definitely needs to go to A+. It has the special bulk Scizor always dreamed of, and has more physical bulk than Skarmory. It has reliable recovery, (iirc) knock off, super powerful priority, and
defog. While there is a power loss between CB Scizor and Scizor-M, Mega Scizor gains so much, enough, in my opinion, to make a A pokemon A+.
A+
Are you joking? I'm not sure if I should respond sincerely or not, but Excadrill is definitely an A rank pokemon. It's a physical attacker that can bypass Levitate and Multiscale (and reliably kill Rotom!!!!) or reach an insane amount of speed with sand support. It also is a great Rapid Spinner, which is essential in this metagame.
Wait, what? You seem sincere about Excadrill. First of all, in sandstorm, how is he dead weight? He reaches an insane speed stat while being adamant, and hits super hard with SlideQuake coverage and Steel STAB coming off of 135 base attack. Also, personally, Mold Breaker is a better ability to use, as it allows you to kill Rotom-W.
And regarding Deoxys-D, you are right that he is a bit one dimensional, but he is so good in that dimension. With 50/160/160 bulk and a Red Card, you can almost always get 3 entry hazards up and stack hazard damage on one opposing Pokemon. For a defensive Pokemon, he also has an insane base 90 speed which allows him to taunt Defoggers and opposing Pokemon trying to use him as set up bait. Also, base 70 offenses are certainly not superb, but they are enough if you need an Ice Beam user to slay Gliscor, for I don't know, Bisharp. Speaking of which, Deosharp is a very popular core that, when done correctly, either makes sure hazards are kept up the whole match, or gives Bisharp a free SD which he can use to sweep a team.