200+ SpA Life Orb Teravolt Kyurem-B Ice Beam vs. 252 HP / 0 SpD Eviolite Porygon2: 133-157 (35.5 - 41.9%) -- 77.3% chance to 2HKO after Stealth Rock and 1 layer of Spikes
252+ Atk Life Orb Teravolt Kyurem-B Outrage vs. 252 HP / 252+ Def Eviolite Porygon2: 175-208 (46.7 - 55.6%) -- guaranteed 2HKO after Stealth Rock
252+ Atk Choice Band Teravolt Kyurem-B Outrage vs. 252 HP / 252+ Def Eviolite Porygon2: 204-240 (54.5 - 64.1%) -- guaranteed 2HKO after Stealth Rock
Kyurem-B can also win with Substitute stalling...
yea against sub kyube and life orb/band it's better switching out, but it can far better against a physical scarf set, as outrage does max 42% to 252/252+def p2.
against landorus it's a similar boat as focus blast does max 70% to max Def p2, also knock off, so p2 can't counter but can check as ice beam OHKO's
these are two of the most powerful wallbreakers in the tier, so...yea there's not a whoolle lot that can really stand up to them haha
but, p2 can wall m-pinsir w/o boosts, talonflame, lots of other physical attackers, greninja - also tracing protean to power up attacks, and can come in on so many others to either provide chip damage or toxic stall while recovering off the damage. He's a bit tricky in some situations cuz you don't want char x to set up on him, altho he can toxic stall a bit vs bulky char x...altho that's probly not the best situation..against heatran he traces flash fire so usually heatran can't do much but p2 can't do anything back to him lol. Tracing natural cure vs chancy is nice to relieve status if you don't have heal bell. Trace is a bit more usefull on him than others imo cuz he's bulky enough to abuse certain situations. Walls poison heal gliscor, can trace prankster from thundy I for fast recovery and status, while hitting him with ice beam
fares decently against Azu, if it's choice locked into anything besides superpower etc etc, can't take a +6 Play Rough so there's that, but against other variants he can come in and lay down a discharge or toxic if you're lucky :>
can take on garchomp, scarf lando-t/w/o knockoff, lati@s as LO Draco Meteor doesn't 2hko, physDef doesn't avoid the 2hko from Keldeo Secret Sword but spD can take on choice locked hydro pumps. There's probably a few others but imo porygon is a utility wall who is able to sponge lots of hits and provide chip damage/toxic which is great on like a stall/semi stall team lacking chansey. He's not quite as fat as chansey but has great all around bulk, bulkier than Clef, and provides pretty good utility. Also can hurt skarmory with discharge/walls mamoswine, normal tyranitar, hippo, gengar, dragonite, excadrill just as a few others from the A ranks
Notice, I'm not advocating for A rank or anything, just a possible bump to C+ for now (I'm not quite sure if he fits the B rank description, where he would be B-...would need more feedback on that. He faces competition from Chansey, Clef, Sylveon, as all around walls, tho he provides a bit more flare than chansey with his damaging attacks and good mixed bulk, is bulkier than clef but lacks unaware/magic guard great abilities, physDef is much bulkier than Sylveon but p2 lacks the sexy fairy typing and wish/heal bell, so he's not really in the cleric category...would be more comparable to Hippo/Ferro/Gliscor/Mandibuzz/Slowbro/Chesnaught in that department.) I guess if he would move up it would be a decision between C+/B- ---if you were to compare between guys like Goodra/Sableeye/Klefki who are in C+ as to Rhyperior/M-Absol in B-....altho someone lately said that it's not so much about the comparison between mons but how they fit the descriptions and fare overall in the metagame.
In C rank, definition is "crippling flaws / completely eclipsed" --main flaws of p2 are knock of and normal typing. Bulk is great, being a wall with good covege is great, and trace is actually usefull as he can stick around longer than say reg. guardy or whatever. Also MegaZam with trace has been talked of recently as being very usefull as well.
"completely eclipsed" is basically competition between p2 and chansey, both normal walls w/eviolite...Chasney is cleric w/ wish support and paralysis/toxic support, very fat...p2 has the bolt beam attacks so often he can provide more damage than chansey seismic toss, main niche is abusing trace ....i guess by this reasoning p2 is almost outclassed by chansey but has the niche of being more offensive, physically bulkier, and trace, not sure how the overall bulk between the two measures out. If we were to go solely by this then p2 probably fits C rank well and imo is a candidate for C+ as he can perform very well, but has lots of competition from other bulky mons with utility.
verry very sorry for rambling on, i tend to get caught in a stream of thoughts
anyway tl;dr p2 for C+