Their priorities are completely different.
The western dev seems to focus on gameplay and implementing some robust gameplay mechanic, or making the game beautiful and distinct visually.
The jap dev on the other hand, focuses on story and characters. The popular RPG maker games all have story and character as the focus, not anything else. Even if focus was put to make the game appealing visually it's for the sake of characters and not for the sake of the game itself.
I would argue there isn't a correct approach, it's just modern audiences, or at least people who are willing to try RPG maker games lean toward preferring story/characters.