I agree, Petilil should be in High tier. While lack of auxiliary coverage moves hurts it a bit against Dragon gym, etc., she has a lot of utility even against Pokémon that resist it, because of her power and ability to set up Quiver Dance after Sleep Powdering. People who have not used her generally complain about her lacking good coverage which is her biggest flaw and one I'm not going to deny, but I believe everything else about her augments that and makes her one of the most useful Grass-types ingame. You get her early and in Black you get a great ingame trade for her, in White you can of course catch one yourself early on, either way you get her around Nacrene City (2nd gym city). Even though her circumstances would seem inopportune with Bugs (Forest and Castelia Gym), I found her easy to train because of Sleep Powder and Leech Seed / Mega Drain recovery. Later on she hit like a truck, I think we all know Quiver Dance + Petal Dance is destructive. The only Pokémon you'll have trouble with other than Dragon Dancing Dragons (Sleep Powder them then switch anyway)
are the Sap Sippers, like Raikaria pointed out, and you don't face very many Deerling.
Joltic to Upper Mid. It's too late in the game for high teir. If it stays there, Klink should be raised, because Klink is more useful against in-game bosses.
Disagree, it's midgame and when you get it it's an extremely opportune time because it resists the attacks of most things in the cave and can get a few levels. It struggles a little until it evolves but that shouldn't take long because it demolishes the Tower and Flying gym. You get the Charge Beam TM and already have Volt Change just waiting for it to get Thunder, which isn't long after. You do get it at the best possible time for it, really. I don't think its lateness impacts it much at all given the level you catch it at being close to its evolution and given you just pick up Lucky Egg... When you get it, you're only a bit past the halfway point anyway, still a bunch of Gyms, Victory Road, and the Elite Four + N/Ghetsis and all the trainers in between to go. I think Joltik is ideal for High tier. It's just a significant bit better than the things currently in Mid, to the point of jumping over that gap, although naturally that tier needs refinement anyway.
Cottonee is useless unlike Petilil since it has no offenses and has to rely on Leech Seed stall, any Grass-types you can catch are better than it pretty much since they can actually attack, and something like Ferrothorn could probably stall more efficiently anyway if you were really that masochistic. Low for it and Ferroseed (which you get even later and has the same problem except it can actually attack kinda...) imo.
Litwick Upper Mid imo, I don't know about High but a lot of people have been reporting positive experiences with it and while it's really frail and takes awhile to evolve it
is strong and helpful against the E4 and Ice gym.
I think a reasonable
preliminary outline (that can be further refined) for High would be:
- Darumaka
- Oshawott
- Sandile
- Drilbur
- Scraggy
- Joltik
- Petilil
- Archen
- Tepig
- Sawk
- Timburr (can trade)
I don't know about Tympole or Sigilyph, someone can slot them in or come up with a better High tier for me. My issue with Conkeldurr is that its movepool sucks for
way longer than Scraggy's. I know this list is quite imperfect but it's a starting point.
Lilipup could stand to be in the higher echelons of Upper Mid or the lower echelons of High since its incredible earlygame utility declines severely (particularly relative to other Pokémon that you can acquire later) before the midpoint.
You could create a Top tier as well. I'd put the first four or so mons that I just named in it at least. Darumaka and Oshawott at the
very least are a good deal better than most other Pokémon because of their niches (Darumaka is ez the best Fire-type while Pansear is mediocre, particularly with bad Fire moves up until the point you can just catch the vastly superior Darumaka anyway, and I've already whined about Tepig though it's still good... Oshawott is leaps and bounds above the other Waters, it takes you awhile to be able to catch any decent Waters and none of them are clos eto Oshawott).