Smash Ultimate · Mid Tier
Neutral air has a big hitbox, a fast start up and combo ability all at once. Down tilt has none of that, so it gets faster.
Each mid-tier character receives a buff and a nerf: shave off the most unfair part of the kit while lessening the character's biggest weakness.
Each entry lists the move or ability affected, the adjustment itself, and — where the analysis states one — the problem it is meant to solve and the reasoning behind it.
Charizard is one of Smash Ultimate's entries — the full tier-by-tier breakdown covers the whole roster.