As you say, "Chihayafuru" had a very good and realistic description. I think that's because the original content is drawn in such a way, and if such a content is made into a live-action movie, it is unlikely that there will be a divergence between making it with the audience. I also feel that the degree to which actresses and actors (or managers such as producers) understand the content that they are involved in has a significant effect. "Chihayafuru" seems to satisfy one or both of these.
On the other hand, non-realistic content, such as Pokémon, is likely to deviate from the characters held by the user when it is made into a live-action movie.