Because outside some dialogues and similar scenes I honestly don't see nothing identical between the two. What I saw is bad acting from the main american lead who evidently could not care less to learn some portuguese (why you talk in english if you're gonna be subbed anyway? Go straigh for portuguese), general boredom, scenes that are meant to be powerful and emotional yet they're not felt in any way like the martyrdom of the three christians from the first village and the death of Father Garrupe, cheesy scenes with prostitutes of whom the Japanese must have had some serious infatuation back in the day seeing how they were a constant presence in the movies of this era, bad acting again from the guy who portrays Father Ferreira, a lot of "Tell, don't show" that Scorsese intelligently avoided, and so on...also, the thematics could not be different since here there are no questions about the existance of god or not, it's not what the movie focuses on. The movie just wants to portray an historical event as it is, with no personal questions of faith inbetween, like Scorsese tried to do with his work. Honestly, even if I'm not a religious guy in any way, I suggest you to rewatch the excellent scorsese flick instead of watching this dreck. Avoid it, even if the snob Japanese cinema connoseurs say you otherwise.