Considering Venoshock nukes down the 6th Gym... uh... I'm really failing to see how waiting a little while longer for Petal Dance is such a big deal.
Not exactly. Mawile pretty much walls Roselia given it has a Steel-typing, but I guess if you have Toxic Spikes, you could just set up on it, though that is not a very efficient strategy in itself. Mr. Mime has SE STAB in the form of Psychic, giving it something to watch out for, but I guess you could OHKO it if you are strong enough/you have poisoned it already. Also beware Light Screen. Sylveon can easily take special hits, but it... cannot do much back...
Furthermore, Giga Drain gives it something many Pokemon don't have around its tier - sustainability. That's really hard to match even in the earlier parts of the game up to late game. It having to wait for Petal Dance when it has Giga Drain is fairly trivial. Again - consider that even Charmander / Charmeleon has a weird rut around it for a short time before they become "nukes" and they require a Mega Evolution to pull it off.
I guess that is fair given it -does- have Base 100 Sp. Attack after all before evolution.
Also:
Eviolite easily patches that issue, and even without it I didn't see much that really OHKOed it beforehand unless it was something like... birds... which you avoid
My issue with Eviolite, although very minor & insignificant, mainly comes down to the competition, like how many NFE's do you have at that point, & which one needs it the most. I guess it really helps Roselia out though.
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Would like to try and clear out some starting from Route 2:
Linoone: Decent HM slave (3 HMs in Cut, Surf and Strength), Pick Up can be helpful, levels pretty quickly, decent speed but not much else, average typing C/D/E Tier
Probably more D than anything. When I used it, it was garbage & I ditched it early, but it seems like a D-Tier Pokémon to me.
Beedrill: Slow, poor typing, weak stats. Levels quickly though but should be dropped when something better comes along E/F Tier
Butterfree: See Breedrill but Confusion is nice for the first gym. E/F Tier
I think you misunderstand what F-Tier means: Basically it is a tier reserved for those that are -absolutely- garbage in-game, & should never be considered for a serious run. Even if those two were bad, I would never consider them F-Tier material. Also Butterfree is way better than that lol. 97.5% Sleep Powder is very reliable, its speed is decent, though middling, & an early final evolution is normally a good thing to have. These two are better than E-Tier imo.
Pidgeot: Decently fast, OK level up but overall weaker and slower to Talonflame who has better typing too. But a decent flying type which can help with 3 gyms. D/E Tier
OP said:
We do not decide the tiering of one Pokémon based on its performance relative to another Pokémon. It does not matter if Pokémon X does the same thing better than Pokémon Y; if both are good enough for the same tier, they will be placed as such. (e.g. Pansear should be E-Tier, because Charmander does its job way better)
Diggersby: Levels fast, evolves early, decent typing with a good movepool. Terribly slow and weak though without Huge Power. D/E Tier
It is not as bad as you are making it out to be. Its lack of power late-game is an issue, but it has a good typing, a good movepool, comes at the start, Pickup is always good, & it also has okay bulk as well. I would probably put it around C-Tier or D-Tier.
Vivillon: See Butterfree E/F Tier
No, just no. It is A-Tier for a reason. Two solid abilities, great sweeping potential, & pretty much amazing early-mid game. It drops off a bit near the end, but it is still okay. A solid A-Tier Pokémon. There is no way it is going to be any lower than B-Tier.
Please come up with more coherent arguments next time instead of saying something like "see Butterfree" (Even better, use them).
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Also I am very hesitant to put Combee in F-Tier (Assuming Female). It is not completely useless, you get some useful coverage, some sustainability, etc. It also comes early as well! It might be bad, but it is definitely not F-Tier useless lol.
EDIT: Sorry for the excessive quoting lol... v_v
DOUBLE EDIT: Combee without evolution may be considered for a different entry, though if I do that, it is definitely going to be automatically placed in F-Tier, since it definitely fits the bill lol.