i figure i ought to start another bitch rant on this guy so brb
let's just be really fucking honest here. this guy is beastly. we all know that. however, with greg getting the inevitable boot, i can see him becoming the next most retarded thing ever to exist (i.e. the next potential suspect)
we can probably start by looking at the basic facts. 145 attack + tough claws is pretty godly. metagross hits just about as hard as say, zard X. however, unlike zard X, metagross has extremely good bulk, and more importantly, naturally hits the 110 speed tier, allowing him to tie with Gengar, Megallade, eon twins and every shit inside this speed tier while beating everything else below.
that's not really all. beyond metagross's stabs, you don't really know what the fuck this guy can run. meteor mash and zhb are just about the only guaranteed things imo on metagross's moveset, and from there, he can just pick options like bullet punch, elemental punches, pursuit, hone claws, agility (rock polish is for mainstream idiots), hammer arm, earthquake and grass knot. heck, there are even gravity sets out there, which is kinda stupid. pup sets even have potential in destroying slower teams too.
if anything else, metagross just hits... like a dumpster truck. meteor mash is pretty much an absolute nuke, and 2 shots nearly everything without a remote semblance of physical bulk. 80 / 150 / 110 is amazing standards for bulk: it actually has comparable, if not better bulk to mega salamence. metagross's real issues are really scarfed earthquake users, but they aren't exactly the hardest thing to take advantage of with the 985478932 shit in the tier that is immune to ground. even magnezone fears hammer arm/earthquake while he barely 2hkoes (iirc) with thunderbolt. not a lot can really safely switch into it (wash doesnt enjoy tpunch/zhb, bisharp can't handle hammer arm, slowbro dies to gk, revenge killers still have to take a bullet punch to the face, etc)
i mean, i know there will be the inevitable argument that metagross can't run everything at once, but honestly, i don't see what's the issue, the coverage options just means metagross is more threatening, especially when it really only needs mash and zhb.
or maybe i just suck and keep churning out gross-weak teams, but either way, i think this guy is pretty retarded as fuck.
tldr: power level is overpowering for ou, it sits as one of the faster mons in the tier, and it actually has some really godlike bulk.
im probably gonna get flamed for this but idk, i think there needs to be at least some sort of discussion on this guy; he looks set to become at least the next suspect imho after greninja so might as well. the current S ranks (without greg, obv) don't have this combination of power, speed and bulk that metagross does (latios/thundurus lacks bulk, landoge lacks speed and needs scarf). the only other thing that could be this ridiculous is probably msable but at least there's a hard counter in clefable...
I agree with a lot of your points on M-gross.
And here is my wussy rant of the day:
I know hax is not really a legitimate reason to complain (unless uncompetitive like prankster swagger) but after countless matches with Gross, I realized just how much I underestimated his moves' hax rates. It happens way more often than I expect and it puts so much pressure on defensive mons because yea, I can tank a neutral meteor mash then a hammer arm with my Ferrothorn...not so much when he gets that +1. No problemo, I'll just send in a bulky water, but not Slowbro since I found out that the thing had Grass Knot after it killed my Hippowdon, woops. Alright, Rotom-W's totally got this.
Rotom-w flinched!
Well damn.
I'm not saying this scenario happens every game, but hax coming from Mega Metagross becomes an actual, tangible threat. I don't brush it off as oh, it won't happen the next time I see a Metagross, because the potential is there, and it's moderately high.
I talk about this from a defensive standpoint because obviously you can revenge kill it before it haxes you, but even then, there's only so many Scarfers/faster/priority pokes who can kill M-gross quickly enough before it kills your own Scarfer.
Maybe I'm just a whiny baby crying about typical RNG things. And ironically, whenever I use M-gross myself, it doesn't put in nearly as much work as I want it to (that's just personal experience) so I don't think it's necessarily breaking the meta right now; it's not Salamence-level or Greninja-level in my opinion...but it is darn frustrating.