I don't think Salamence should be in B+ rank becauseAm I the only one who thinks that Hydregion and Salamence should be the same rank? I mean, both have good, but not great speed, both have a mediocre defensive typing and both are amazing Wallbreakers. They have small advantages over each, but in the end, both are exactly the same.
I agree that these two guys should go up to S-Rank. Terrakion is amazing, despite its weakness to priority. It, along with Keldeo, set the Speed tier in BW2. Its amazing STAB combo not only means that only a handful of pokemon can counter it, but it also means that Terrakion can run any move that it wants to in the last two slots. This means that you customize the last two slots for your team's needs. This is what makes Terrakion such a good lead, as it can set up Stealth Rock reliably and threaten opposing leads with either taunt or its STAB moves. Its not as good as it was in BW1, but its still good enough for S-Rank IMO.
Garchomp is very similar to Terrakion, except that it has worse speed, but weaknesses less priority moves and better defenses than terrakion. The main difference between Terrakion and Garchomp, however, is that Garchomp can get past all of its counters rather well. Skarmory and Bronzong take a large amount of damage from a Sun boosted Fire Blast, while Landorus-T and Gliscor cannot tank Rain boosted Aqua Tails. Garchomp is an amazing offensive lead, thanks to its access to SR, its amazing STAB combo and most importantly, Rough Skin. Rough Skin allows Chomp to beat other leads using contact moves, as Garchomp is powerful enough to bring down opposing leads to their Focus Sash (assuming that its running Fire Blast). Another cool thing about Chomp is that its one on the few offensive pokemon in the tier able to run a defensive set. Thanks to its good 108 / 95 / 85 defenses, Garchomp can make use of its rather decent support movepool, including options like Stealth Rock and Dragon Tail. Overall both Garchomp and Terrakion are amazing pokemon in the metagame and should be upgraded to S-rank.
Sorry if I was confusing.
Don't get me wrong, Tyranitar is an amazing Pokemon, but it doesn't support a team as much as Politoed. It doesn't even come close imo. The benefits that rain bring to the table far out weigh the benefits that sand brings. Yeah Tyranitar also supports the team in countering Latios, but then I feel you're putting too much pressure in winning the weather war and countering Latios. Then we talk about Tyranitar's x4 weakness to Fighting type attacks, which are everywhere in OU. Also being weak to Ground, Water, Grass, Bug, and Steel, and I don't think we have an S rank Pokemon here.
The thing with Scizor is he is pretty much CB(like 95% of the time, at least in my experiences) or SD. That's not that many sets, though I agree with you that it is a versatile pokemon, but I really can't see it being S-rank due to it's predictability of which set it runs. Taking into consideration the definition of S-rank and how good Scizor is, I still see it as A because of its lack of many sets.
Tyranitar is an incredible pokemon. However, like ShootinStarmie said it's weak to a lot of common types, and come NOWHERE NEAR the support Politoed supplies for its team. T-tar is great along with the sand it brings, giving rock types a SpDef boost, but T-tar will probably be the only rock type on the team. Don't get me wrong, this boost is awesome. T-tar has amazing attack and boosted SpDef when he summons Sand, as well as amazing utility against Lati@s. However, Politoed (and rain as a weather) is on a whole new level above T-tar (and sand). Politoed can run a multitude of sets and brings a +1 boost to all water moves and halves Fire attacks for the entire team with its rain. This utility outweighs chip damage (let's not forget its on both sides) and a SpDef boost to Rock-types by a landslide. No Pokemon in OU even compares to the utility Politoed brings to a team, which is why it is S-rank. I love T-Tar, use it a lot, and it's one of the best OU Pokemon in BW2, but it's not S-rank.
I could see Tangrowth in C rank because it really does need a good amount of support to be effective. It needs a Special Wall of some sort to be paired with since its special defense is absolutely abysmal for a Defensive Pokemon. Plus it also needs some support in the form of a Rapid Spinner to make its Regenerator ability any useful. While these types of Pokemon usually lend themselves to the type of team Tangrowth would be seen on, namely Stall teams, it is a pretty significant amount of support nonetheless and Tangrowth absolutely needs it to be effective. Plus it is outclassed by Ferrothorn like you said and arguably Amoonguss as well, despite it being more specially bulky it can take Fighting Type moves just as well thanks to its Poison Typing. Roserade is a similar Poke that is more effective as well thanks to its ability to lay down entry hazards effectively and its more reliable form of Recovery. However, like you said it has some great niches, being able to tank Physical attacks like a champ and having access to Sleep Powder are pretty useful so it seems like a worthy C rank poke to me.
Tangrowth has insane physical bulk, it takes physical dragon attacks well enough. I'd argue not having a steel typing is what sets it apart from Ferrothorn because it doesn't need rain to beat things like ddnite, it can actually wall fighting types, etc. it has a resistance to earthquake which is actually a huge help. It might not have as many resistances, but it has the bulk to make up for it, not having to worry about these Common weaknesses a steel typing would give it is what makes it so great.
If we're making Tyranitar S rank because it checks other weathers so well, surely we need to make Ninetales S rank as well? I dont agree with this tbh. I never thought Hetran was S rank material in the Genesect era just because it countered it so well.
But Tyranitar checks other weathers while still being, y'know, really good, whereas Ninetales is mediocre and not very versatile. You can run a specially offensive set and a defensive set and that's it. Neither of them are even really good because Ninetales doesn't have the offensive presence to be a huge threat (if you bring your own weather inducer in there's a fat chance that Ninetales can barely damage it and has to switch out) and defensively it's alright, but fire typing is less than ideal for a defensive set (lol stealth rock weakness). Tyranitar can run a defensive set due to its titanic bulk (granted, rock/dark typing still sucks defensively, but Ttar's bulk stands tall above Ninetales'), support its team with SR or go for sheer power with a Band or a Scarf.
Is ice not a "Common" weakness?
I'd argue that any physical wall operates at it's best when paired with a special wall, and vice versa; there are few teams that don't opt to run a special wall, so I'd argue that this isn't necessarily a valid point to denote Tangrowth.
