Audino can not be overshadowed by any mon in UU for the reasons I mentioned above. Countering CM Florges is only one of the points of that 204 speed, for wish Florges or something else like Blissey, outspeed them so it is possible to encore them for heal bell or wish so that stop passing wish or curing. It's worthy to use these evs in speed instead of other places.
Probing, knowking off items, force out thread and stopping setting up, these are the things Audino can do for a team. I can not understand why Clefairy can be ranked but Audino can not be.
Clefairy actually has a viable niche in its typing and ability, Magic Guard, which gives it at least some opportunity to deal with threats such as Mega Blastoise and Hydreigon, since it takes no Hazard Damage and can deal with them fairly decently with Softboiled. A Specially Defensive Clefairy actually operates slightly different than Florges or Aromatisse, since it has access to both Thunder Wave and Healing Wish, two important support moves that neither Fairy Has. The closest comparison is Whimsicott, and that mon is played as a completely different pivot.
Overall, I think you're looking at the incorrect factors. The set that you're using is largely outclassed by other Prankster mons such as Sableye or Whimsicott. You can easily pair up either with a Tentacruel to set up a stable and reliable core alongside decent utility support options. Running that much speed on Audino hinders its ability to tank hits and reliably recovery from them. It's not an Alomomola where it starts with 471 or something insane, so you're looking at really reduced bulk from that much speed. However, Audino wouldn't even function as a Florges counter. Taking in Audino's stats and movepool, it would also serve as either a defensive wish pivot or some sort of underwhelming Calm Mind sweeper. Regarding the former, Alomomola outclasses it in every respect, having more defensive bulk, better typing, and a very decent utility movepool. Regarding the latter, if you've picked Audino as your Calm Mind sweeper, then I cry tears for Reuniclus and Suicune.
I get that you've made Audino work to some capacity against lower level play, which is just fine. It's nice when your favourite Pokemon do well in a tier that totally outclasses it. But just how a Choice Band Flareon has no business being in UU, neither does some demented man's version of a female white marshmallow.
TL;DR Audino will not rise.
I think Reuniclus should be moved down to A-
The prevalence of Dark / Ghost types in the tier make it hard for Reuniclus to set up / sweep in the current meta. Many of the common Pokemon in UU are able to beat Reuniclus 1v1 such as Entei, Hydreigon, Mega Bee, Krookodile, Feraligatr, Crawdaunt, Chandelure, and Heracross. It is also completely countered by Sableye, and Doublade, as neither of the common moves it runs can touch it. Another viable counter is Milotic (higher speed + haze), which completely shuts down Reuniclus.
Many of these pokes also get a switch in on Reuniclus easily, as they are mostly dark, one predicted Calm Mind or Psyshock / Psychic and you have a free switch, forcing Reuniclus switch or take massive damage. Reuniclus cannot OHKO most of these pokes back either barring Crawdaunt, Mega Bee, Heracross (25% chance), and Krook (6.3% chance).
Entei has to use Flare Blitz in order to be any danger to Reun, and after a Stealth Rock worth of damage, it can only click Flare Blitz 3-4 more times. Standard Reun strat is to Recover on an Entei's attack to scout for the first move. Reun pairs extremely well with a Bulky Water, so Entei won't be doing anything.
Hydreigon needs to be scared of +1 CM and/or Focus Blast. Choice Scarf can't even OHKO non-boosted.
You can Recover on Mega Beedrill's U-turn, which is what your play should be most of the time. Either that or switch into the relevant partner cause you know U-turn is coming. Bulkier Cobalion w/ Volt Switch makes a great partner with Reun, btw.
Yes, I'll grant you that Choice Band Krook is a problem for Reuniclus. But so is a Choice Specs Hydreigon. It's not surprising that buffed up +1 Super Effective moves can KO a Pokemon. The same applies to every other A+ mon.
The fact that I can get a +1 Psyshock's worth of Damage on that Gatr before it even thinks to KO me is hilarious. Oh and guess what, +1 Gatr doesn't KO, so if it thinks I'm switching or gonna set up or waste turns, that gg, that's a dead Gatr.
Again, not surprising that a Crawdaunt OHKOs Reun. At least something does.
Chandelure Switches in on Stealth Rock. It's now at 75%. That same turn, Reuniclus clicks Calm Mind. It is now at +1, and can survive even a Specs Shadow Ball. The opponent now has one of two choices: (1) Spam Shadow Ball and weaken me so the next Pokemon can take out Reun; (2) Trick me and Lock me into something... anything... and let the next Pokemon take out Reun, or get lucky with a Recover/Calm Mind (which won't happen against me, I guarantee that
). Well, in Scenario one, Chandelure's Specs Shadow Ball will hit me for a good chunk, and I'll OHKO with a +1 Psyshock or a good ol' fashioned Shadow Ball. Same applies to Scenario two, except now you have a +1 Reuniclus that's locked into Psyshock. Now that's somewhat good, except your Chandelure is dead. Oh yeah, speaking of your Doublade answer, you realize that Shadow Ball Reuniclus isn't uncommon, right? You also realize that Doublade needs about a turn or two to do anything relevant back to Reuniclus, right? Also, remember that Water-type partner I was talking about? Yeah, Doublade is a common threat that people prepare for, it's nothing new for Reuniclus.
A Choice Band Heracross can OHKO Reuniclus
? Never knew that.
Look dude, my point is that your calcs weren't very critical of Reuniclus's issues, and you didn't really present any valid arguments for Reuniclus to drop. Your discussion points did, however, echo some reasons as to how Reuniclus fell from its throne (it used to be S rank just over a month ago). This being said, your other points are not very well thought out. For instance, you say that many of these Pokemon get a switch in on Reuniclus easily. That's not true dude, all of those Pokemon fear one of Reuniclus's common moves, or a Calm Mind. It also beats all other Calm Mind users if it runs Shadow Ball. That's a very notable job. The introduction of Sableye has created a bit of an issue for BOTH common Reuniclus sets. Since the meta currently favours semi-stall or balance cores with Sableye, Reuniclus is having a bit harder of a time getting its job done to its fullest capacity, however, it's still a damn threatening Pokemon. If Reuniclus does fall, it'll take some time for that to be determined. The lowest I can currently see is High-A.