RR44,
Japanese audiences traditionally don't receive western interpretations of their material very well. G'14 did well all things considered, but wasn't a massive blowout in Japan.
Right now both trailers to the new movie have received very average exposure and reception in Japan. A very trustworthy source, who has typically nailed how well movies do in Japan over the last 8 years, expects it to do no better than G'14 5 years ago. It won't get anywhere close to Shin Godzilla.
Another fine example is Detective Pikachu. It's not tracking particularly high in Japan and it's confused a lot of audience members who only recall the game Detective Pikachu borderline flopping. On the other hand, the Mewtwo Strikes Back remake is likely to blow the doors off of Detective Pikachu.
They simply enjoy their interpretations more. It's just how it is.