A good question, to be sure.

Hmmmmmmmmmmmm.

Well, Japanese RPG's do include Final Fantasy. Point for them.

But Western has Dungeons & Dragons. Many points for them.

Japanese have engaging stories.

Western has D&D.

and so on, and so on.....

I can't decide. I like them both. However, I do think that Western RPG's do allow more role-playing. You can make decisions and have those decisions not loop on you until you pick the right answer.