Originally Posted by Fat Nyara
Special defensive variants of Armaldo, and Golem with Leaftovers and Sturdy can, like I told, of course; physical tank or just offensive sets of Armaldo can't, like a Golem without sturdy can't, too.
Octillery HAVE the power and can just destroy Glaceon's substitute and it's face everyday (unless it's a special attacker variant, then Octillery will have troubles, but like I said, I'm talking about Rock Blast users, if you don't have one, then don't let Glaceon to sub). Offensives sets of Garbodor can easy break it, while it's defensive sets can take it's hit quite well (unless you don't invest nothing on special defense, then nope), break it's sub, and deal good damage on the process, it will win the 1vs1 at the long run, or just leave Glaceon without substitute and setup some hazards before fainting, that's almost the same.
To be fair, both Specially Defensive Armaldo and SubProtect Glaceon can 2HKO the other.
4 Atk Armaldo Rock Blast (3 hits) vs. 112 HP / 144 Def Glaceon: 162-198 (54.18 - 66.22%) -- guaranteed 2HKO after Stealth Rock
252+ SpA Glaceon Blizzard vs. 252 HP / 252+ SpD Armaldo: 178-211 (50.28 - 59.6%) -- guaranteed 2HKO after Stealth Rock
But if you are assuming that Glaceon is already behind a Sub (which it should be), then Armaldo loses the exchange regardless. It can't switch into a Blizzard safely without taking another hit immediately afterwards since it is slower. Even if you get Armaldo in safely, what's to stop Glaceon from simply using Protect during the interim turns to recover and inflict some Hail damage to Armaldo to guarantee that you can't 2HKO it before it 2HKOs you? Golem has a similar problem in that it can't safely switch in either, and once it takes a Blizzard, it dies plain and simple (Hail damage gets calculated before Leftovers recovery if I am not mistaken). Garbodor is rarely offensive, and it tends to be physically defensive due to its typing. The extremely rare Specially Defensive is still 2HKOd by Blizzard and has trouble even breaking its Sub with Rock Blast (it takes at least 3 hits). As for the offensive variant, it simply gets OHKOd after Rocks and the turn of Hail (and has a 75% of being OHKOd with just the Rocks damage).
With Octillery, besides the fact that no one uses physical variants when its Special movepool is so extensive (and the fact that it is really uncommon in the first place), it needs a Choice Band to actually do more damage than Specially Defensive Armaldo (which has its own problems). Besides, you still need to switch in safely, since Blizzard 2HKOs, while you have to deal with Protect recovery and residual damage from Hail. Add that to the fact that you can't guarantee the amount of hits, Cinccino is really the only Rock Blast user that can reliably defeat Glaceon, (but it still needs a safe switch in).
Edit: Sorry EBeast, if I had known you were gonna post, I wouldn't have bothered. :P