User blog comment:Samium/Nico Robin, human in a world of characters (Essay)/@comment-5239749-20170106210337/@comment-27923483-20170213165611

In fairness to Luffy, I'll say this.

He is 'somewhat' more credible as a manga character than an anime, largely because of the way the medium works,

The changes is tone in the anime are so polarizing that it forces luffy to become two different characters. Most noticably, his voice changes depending on the tone of the scene.

With Manga, there is a bit more of a middle ground, which helps with the consistency, plus he neverlooks as dumbfounded during the solumn scenes as he does in the anime.