Naganadel, the Poison Pin Pokémon, Has a Weight of 330.7 lbs. While Ash Naganadel was commonly used as a Poipole, it returned in Z-Move Showdown as a Naganadel and helped Ash defeat a Shiny Guzzlord.

Given that Ash accumulated 25 years of experience in his less-than-a-year of being a trainer, one could argue that there's something similar going on in the anime as well.

The first official Fire and Ash trailer turns subverts expectations by teasing a showdown between the Ash people and the Metkayina, who took in Jake Sully in Avatar 2.