Doesn't even have to be extreme differences. Just list and discuss any anime you think had better manga than anime adaptations. Whether it be because of poor animation, poor art, short story length, changing the story to fit episode count, poor choice in voice actors, etc.
>Golden Kamuy
CGI bears, breakneck pacing, and poor animation. Not hina.
>MHA
The gripes I have for it is the animation isn't the best it could be. Especially not the tv version. Shading is all gone but that tend to happen with anime versions. Voice acting is a plus, at least in japanese. Pacing is fine but sometimes it feels like the show took too many long pauses. Music is hype though and having bonus anime only material is kind of cool. But I'd still say the manga is great enough as it is without all that.
>Goblin Slayer
CGI is good when you use it sparingly in situations where it's harder to animate in 2D. But this show can't use it right at all. Somehow the CGI goblins look worse than CGI GS. Changing events around in the story to save the farm assault for the last episodes was kind of dumb but I see why they did that. I don't understand why they pussied out and censored themselves when the manga let everything hang out to add to the horror of the situations. This and Golden Kamuy are the worst offenders on my list so far. Definitely stay away from their anime.
>Hakumei & Mikochi
Too short. I didn't even know there was an anime till I found the first volume of the manga while browsing a bookstore.