when i look at korean music and half of japanese music its soooo similar. like boy bands lol. why would i say asian is mroe creative. its so simple just that certain japanese artists in my opinion are creative, but as a whole not really.
western music can have many variations. . .to me its like a tie. like neither.
rock music however. thats a whole different story.
edit: v-kei is much more creative than jpop