I still again don't get wingull being THAT high outside of scald/drizzle which is basically one of the few things wingull does right. I made my arguments a while back, but does someone want to counterargue about why I think Wingull should move down to A or B tier?
Scald is an 80 BP STAB with a great secondary effect that Wingull has access to incredibly early via TM (I am assuming Lvl 17). Here is when each non-Legendary Pokemon in A tier gets access to an >80 BP STAB (for TMs, I have assumed Pokemon are the same level as the highest leveled trainer Pokemon in the area you find it):
Cutiefly: Pollen Puff (Lvl 25) (Evolve)
Dewpider: Scald (Lvl 17) (TM)
Diglett: Dig (Lvl 35) (Level Up) [Earth Power available earlier, but runs off special]
Fletchling: Acrobatics (Lvl 15) (TM)
Gengar: Shadow Ball (Lvl 30) (TM)
Grimer: Crunch (Lvl 32) (Level Up)
Growlithe: Flamethrower (Lvl 34) (Level Up)
Litten: Lava Pledge (Lvl 17) (Move Tutor)
Magmortar: Lava Plume (Lvl 36) (Level Up)
Makuhita: Close Combat (Lvl 46) (Level Up)
Mankey: Cross Chop (Lvl 22) (Level Up)
Mudbray: High Horsepower (Lvl 24) (Level Up)
Munchlax: Body Slam (Lvl 25) (Level Up)
Popplio: Scald (Lvl 17) (TM)
Salandit: Sludge Bomb (Lvl 36) (TM)
Staryu: Scald (Lvl 17) (TM)
Stufful: Take Down (Lvl 30) (Level Up)
Wishiwashi: Scald (Lvl 17) (TM)
Zubat: Acrobatics (Lvl 15) (TM)
The analysis is somewhat unfair to Makuhita since he gets early access to the 75 BP STAB Brick Break which just barely misses the cut. However, it's very apparent that many A tier Pokemon aren't matching Wingull's fire power until their 30s, meaning Wingull has a significant advantage by getting Scald so early. Scald, Acrobatics and Brick Break users are very, very valuable since not many Pokemon learn powerful STABs early and Wingull happens to be arguably the best Scald user (outside of perhaps Popplio) due to good bulk, a good ability and good availability.