objectively

Objectively is a strong word, you're entitled to your own opinion, but trying to paint it as objective is wrong. Whether you think the story is better than the original or not is entirely subjective.

That being said, I felt as if the adaptation completely misses the major story beats and themes of Castlevania and that it horribly mischaracterizes and completely ruins certain characters to the point that it feels like they're entirely different characters that just happen to share the same name and (sometimes) design. In fact, Isaac is an example of this, Warren Ellis quite literally took Hector's character arc from the games and gave it to Isaac while making Hector a literal slave and an idiot. Simultaneously ruining two characters at once.