I just saw this and while I ageee with some of it there are things that are incorrect here as well.I did a sweep of what we currently have on site and here are the things I found worth bringing up. I am not arguing for their viability, merely pointing out things that are commonly used (or what should / can be used) that aren't reflected in the analyses.
Arceus-Normal: No Adamant slash or mention of Adamant + Life Orb, no Recover slash or moves mentions
Arceus-Dark: The recently finished Perish set is not up yet
Arceus-Dragon: The introduction is a weird copy paste of the two introductions that were made for it: the original which was done from the perspective of its offensive sets and the new one that was written for the support set. The introduction should be re-written so that it flows much better and communicates that the support set is somewhat common while the offensive sets are rare and often unexpected threats
Arceus-Fairy: Slashing Toxic after Earth Power on the Recover + 3 Attacks set (requires the set name to be changed as well)
Arceus-Fighting: Making Stone Edge mandatory and slashing Ice Beam with Thunder Wave
Arceus-Ghost: Ordering the sets as SD > CM > Support. Redoing the CM set to feature Substitute
Arceus-Grass: Adding a set that is 4 Attacks or Recover + 3 Attacks. It has a CM set that may want to be replaced by this
Arceus-Ground: No moves mention of Extreme Speed, no Judgment + Ice Beam set
Arceus-Water: No Timid Slash
Blaziken: Slashing Life Orb over Mega Stone, moving Baton Pass from moves to a slash
Darkrai: Slashing the final moveslot as Thunder / Sludge Bomb / Focus Blast. Slashing Focus Sash after Life Orb. Sucker Punch in OO
Deoxys-A: Eliminating HP Fire slash and moving it to OO. Making Ice Beam the first slash on 3rd moveset. EV spread changed to 4 Atk / 252 SpA / 252 Spe / Rash slashed with Naive (current spread is slower than Mega Gengar when using a SpA+ nature). This one may require a full revamp
Dialga: Making the offensive set the first, then the support set second. The Choice Scarf set should have Sleep Talk unslashed. No Trick Room set (it is in OO at least)
Giratina-O: Toxic slash with Draco Meteor on the Hex set
Primal Groudon: This could benefit from a full revamp, the content isn't blatantly wrong but I think the sets and all the EV spreads / move sets could be reorganized. Also no SpD spread and no use of Rest outside of OO
Ho-Oh: Tweaking EV spreads. No mention of Substitute
Mega Kangaskhan: No Adamant slash (should be first). Slashing Crunch before Sucker Punch
Klefki: No Dazzling Gleam mention not even OO
Primal Kyogre: Making the order of sets Defensive > CM > Physical. Slashing Ice Beam before Blizzard on CM. Slashing Thunder Wave on CM. Perhaps a full revamp of the CM set instead and renaming it Offensive
Mega Mawile: No mention of Foul Play outside of OO
Mega Salamence: Doing a full revamp. Otherwise cleaning up the EV spreads and move sets a bit and updating descriptions on a whole
Xerneas: Update the coverage slashing for the first set. Sweep rejected the idea of Rest + Geo getting a set, but at the very least it should be in OO (set apart from the Block mention)
Yveltal: Moving Knock Off to moves or even a slash on the first set
Focus blast is not slash-worthy on darkrai.
4 atk grassceus is not only bad (ofc since grassceus sucks), it is certainly worse than ib+se+recover+gknot anyway. Fire blast only hits targets easy to exploit anyway and there are still variants of mons (such as pdon w/o fire move) that grassceus wall. Take special note of its match up vs diancie, why go all dong when there is stuff you can handle?
I would probably even unslash blazikenite tbf.
Scarf dialga shouldn't even be a set imo.
Idk what to feel about rest xern. For me it's more of a poor excuse to try to cheese autowins vs some teams (and having really horrible match ups vs others) than anything. A good player can utilize a set with more options without having to be bad in as many match ups. Rest talk xern doesn't really fit on as many teams as people think. It is still used shitloads which makes for an interesting situation here. Ill go through nayrz comment later