bludz Appreciate the response man. I'll try to form out an informative post as to why I feel like Amoongus isn't, in my opinion, worthy of residing in A-.
Amoongus vs Tangrowth comparison talks have been going on since I can remember, so I'll try not to delve too deep into that, as the whole point of wanting Gus to drop should only be focused around Gus. But I do want to hit on a couple of points:
Correct me if I'm wrong, but the two Mawile sets I see are usually AoA, which carry fire fang, or SD + 3 attacks, which carries knock (at least it should). We could endlessly talk hypotheticals, but if Gus does switch in on play rough + proceeds to take a knock off, it's already doing 98% min, so I'm really not sure how this is a good Mawile answer. It does handle Gengar quite well but if any sort of hazards are up, Gar can 2hko with specs sludge wave.
I also wanted to point out that Tangrowth actually takes less damage from Magearna (w/ or w/o ice beam), Serp at +2, and Gar's shadow ball. Now that's not to say that Tangrowth will necessarily fare better vs. them, as - assuming something isn't already asleep - Gus can still pivot in and put them to sleep. This leaves (at least from the mons you mentioned) Specs Keldeo (under-appreciated imo), Clef, Tapu Bulu, and Nihilego (which has been falling in viability regardless as Terrak is rising). Good thing you pointed out tspikes as I rarely see them and they didn't even come to my Yes, they're still great mons to be able to switch into and pivot, but that's a pretty short list.
Moving on, I'll explain why I think the meta has been unfavorable towards it as of recent:
The banning of Pheromosa, though long ago, led to more spinners/defoggers being used. The two most prominent ones that arose, respectably, were Starmie and Mew. These both pressure Amoongus, and although Starmie isn't excellent, Mew completely screws it over and is the go-to defogger. It can carry taunt, psychic, and not to mention, synchronize.
The banning of Mega Metagross was wonderful news for Magearna and Celesteela, as both lost an offensive check and both beat Gus. The Tapus were seen also seen a bit more, who almost all happen to beat Gus with the help of terrain in Fini and Koko (plus Koko can taunt and/or pivot out). Amoongus wants to beat fairies, but he truth is it can't reliably do so unless your name is Clef.
As new megas got released, primarily when Medicham and Mawile were huge, bulkier psychic types arose in the form of Mew + Reuniclus to check them with WoW and resist Medi's stabs. These both beat Amoongus.
As these (and also ghost types) started getting traction, we started to see dark types, such as Band Tar and Weavile, being used to counter them. They also helped with Latios rising (who also beats Gus) due to their ability to effectively pursuit trap. Both TTar and Weavile beat Gus.
With the release of Mega Heracross (who also beats Gus), these dark types + bulkier builds had a bit of a hard time handling it. As a result, things like Pinsir, Torn-T, and SSSS Lando-T gained more usage due to teams being underprepared for offensive flying types. These also beat Gus.
Besides these meta shifts, if you compare Amoongus to other mons in A-, it is not as influential in a game as them. This isn't to say it's dead weight - it's still an extremely good pivot and, unless an extremely bad matchup occurs, it will do something during the game. However, mons such as the ones mentioned below are more influential, and I'll only slightly touch on this:
Mega Medicham: This having very few switch ins led to a big meta shift, as I'm sure people are aware.
Mega Pinsir: Return is hitting hard af and most teams carry steel types as their answer, which Pinsir has CC for. For faster, more offensively oriented teams, Pinsir has the ability to be a massive threat if it gets to +2 due to QA.
Mega Zam: Being the fastest mon in the tier is a godsend, especially with high SpA and effective coverage in Psychic/Ghost/Fighting to hit (everything?) at least neutrally. HP Fire is also an option, and psychic terrain is a godsend for Zam, denting its switch ins even more. Against bulkier teams, Zam can effectively use either Taunt/CM/Encore to at least cause some headaches. Trace is an amazing ability as well, potentially tracing things like Beast Boost, Swift Swim, etc..
Both Chansey, Skarm, and Sab are stall staples and even Chansey/Skarm aren't bad on offensive teams. Sure, they're passive, but the amount of stuff they blanket check is extremely helpful on some offensive builds.
Mew is the primary defogger of choice and can do so effectively, while simultaneously shutting down the new megas and other offensive stuff like Lando-T and Zygarde that are everywhere.
I could go down the list, but the point that I'm trying to make is that all these mons usually aren't restricted to one role. Amoongus has a specific role to pivot in and set something to sleep due to its lack of offensive presence. It has no utility besides clear smog to stop set-up sweepers, although I'm not sure exactly what set-up sweepers it's stopping in the current meta. After Gus puts something to sleep, it's extremely passive. It doesn't have a good enough secondary role, like most of A- mons due. Yeah sure, it can still pivot in after setting something to sleep.. but then what? This meta is very hard hitting and unforgiving, especially with the introduction of Z moves. Amoongus can't afford to just pivot in and not click Spore, as it's not tanking hits nearly as well as it was in ORAS.
Yes, it's still good at handling things like Ash Ninja before bb, Specs Keld, Clef, and Bulu, but I'm not sure how this merits A-. Jirachi is another mon who also can handle specific threats better than some of its other steel brethren + carries utility in the form of Wish/TWave/Rocks/Serene Grace, yet it resides in B+. Not to mention that losing a ground resistance with Zygarde + Lando being everywhere is a big deal.
I realize this might be similar to above posts but I started it last night so I felt the need to finish the post, lol
Amoongus vs Tangrowth comparison talks have been going on since I can remember, so I'll try not to delve too deep into that, as the whole point of wanting Gus to drop should only be focused around Gus. But I do want to hit on a couple of points:
Correct me if I'm wrong, but the two Mawile sets I see are usually AoA, which carry fire fang, or SD + 3 attacks, which carries knock (at least it should). We could endlessly talk hypotheticals, but if Gus does switch in on play rough + proceeds to take a knock off, it's already doing 98% min, so I'm really not sure how this is a good Mawile answer. It does handle Gengar quite well but if any sort of hazards are up, Gar can 2hko with specs sludge wave.
I also wanted to point out that Tangrowth actually takes less damage from Magearna (w/ or w/o ice beam), Serp at +2, and Gar's shadow ball. Now that's not to say that Tangrowth will necessarily fare better vs. them, as - assuming something isn't already asleep - Gus can still pivot in and put them to sleep. This leaves (at least from the mons you mentioned) Specs Keldeo (under-appreciated imo), Clef, Tapu Bulu, and Nihilego (which has been falling in viability regardless as Terrak is rising). Good thing you pointed out tspikes as I rarely see them and they didn't even come to my Yes, they're still great mons to be able to switch into and pivot, but that's a pretty short list.
Moving on, I'll explain why I think the meta has been unfavorable towards it as of recent:
The banning of Pheromosa, though long ago, led to more spinners/defoggers being used. The two most prominent ones that arose, respectably, were Starmie and Mew. These both pressure Amoongus, and although Starmie isn't excellent, Mew completely screws it over and is the go-to defogger. It can carry taunt, psychic, and not to mention, synchronize.
The banning of Mega Metagross was wonderful news for Magearna and Celesteela, as both lost an offensive check and both beat Gus. The Tapus were seen also seen a bit more, who almost all happen to beat Gus with the help of terrain in Fini and Koko (plus Koko can taunt and/or pivot out). Amoongus wants to beat fairies, but he truth is it can't reliably do so unless your name is Clef.
As new megas got released, primarily when Medicham and Mawile were huge, bulkier psychic types arose in the form of Mew + Reuniclus to check them with WoW and resist Medi's stabs. These both beat Amoongus.
As these (and also ghost types) started getting traction, we started to see dark types, such as Band Tar and Weavile, being used to counter them. They also helped with Latios rising (who also beats Gus) due to their ability to effectively pursuit trap. Both TTar and Weavile beat Gus.
With the release of Mega Heracross (who also beats Gus), these dark types + bulkier builds had a bit of a hard time handling it. As a result, things like Pinsir, Torn-T, and SSSS Lando-T gained more usage due to teams being underprepared for offensive flying types. These also beat Gus.
Besides these meta shifts, if you compare Amoongus to other mons in A-, it is not as influential in a game as them. This isn't to say it's dead weight - it's still an extremely good pivot and, unless an extremely bad matchup occurs, it will do something during the game. However, mons such as the ones mentioned below are more influential, and I'll only slightly touch on this:
Mega Medicham: This having very few switch ins led to a big meta shift, as I'm sure people are aware.
Mega Pinsir: Return is hitting hard af and most teams carry steel types as their answer, which Pinsir has CC for. For faster, more offensively oriented teams, Pinsir has the ability to be a massive threat if it gets to +2 due to QA.
Mega Zam: Being the fastest mon in the tier is a godsend, especially with high SpA and effective coverage in Psychic/Ghost/Fighting to hit (everything?) at least neutrally. HP Fire is also an option, and psychic terrain is a godsend for Zam, denting its switch ins even more. Against bulkier teams, Zam can effectively use either Taunt/CM/Encore to at least cause some headaches. Trace is an amazing ability as well, potentially tracing things like Beast Boost, Swift Swim, etc..
Both Chansey, Skarm, and Sab are stall staples and even Chansey/Skarm aren't bad on offensive teams. Sure, they're passive, but the amount of stuff they blanket check is extremely helpful on some offensive builds.
Mew is the primary defogger of choice and can do so effectively, while simultaneously shutting down the new megas and other offensive stuff like Lando-T and Zygarde that are everywhere.
I could go down the list, but the point that I'm trying to make is that all these mons usually aren't restricted to one role. Amoongus has a specific role to pivot in and set something to sleep due to its lack of offensive presence. It has no utility besides clear smog to stop set-up sweepers, although I'm not sure exactly what set-up sweepers it's stopping in the current meta. After Gus puts something to sleep, it's extremely passive. It doesn't have a good enough secondary role, like most of A- mons due. Yeah sure, it can still pivot in after setting something to sleep.. but then what? This meta is very hard hitting and unforgiving, especially with the introduction of Z moves. Amoongus can't afford to just pivot in and not click Spore, as it's not tanking hits nearly as well as it was in ORAS.
Yes, it's still good at handling things like Ash Ninja before bb, Specs Keld, Clef, and Bulu, but I'm not sure how this merits A-. Jirachi is another mon who also can handle specific threats better than some of its other steel brethren + carries utility in the form of Wish/TWave/Rocks/Serene Grace, yet it resides in B+. Not to mention that losing a ground resistance with Zygarde + Lando being everywhere is a big deal.
I realize this might be similar to above posts but I started it last night so I felt the need to finish the post, lol