This is a very good post.
You can easily see that by looking at the characters in Smash, characters that range from contemporary real world to science fiction(Snake, Bayonetta, Samus, Star Fox crew) are significantly more popular in the west.
A big reason for that divide is WWII, while the US idolized their new war technology, Japan feared it and its future culture would heavily condemn modern indistrialization while trying to celebrate the past with fantasy stories. This was further emphasized in the 80s and 90s, when animes and games, mainly influenced by Miyazaki's Nausicaa and Laputa, started to mesh some science fiction in their fantasy stories, the catch being that said technology was usually condemned. Final Fantasy is full of that and it only got bigger on that as time went on(just look at FFVII). Xenoblade Chrnocles is a more recent example and the nature vs. technology theme is even more pronounced.
The big exception to all of this is Mechas. Japan loves that **** since it started as empowerement fantasy to fight the evil threats of atomic bombs.
forgive the movie nerd for going on a tangent