Dragon Quest would not do well on Xbox One. DQ has a hard enough time selling in the West as is, you do not want to increase the costs associated with bringing DQ games to the West, because if you do they just aren't coming.
Battlechasers and I am Setsuna are not comparable. Battlechasers has a western fantasy comic book art style, it's a Western IP, so obviously it has more Western appeal. Also, Battlechasers is not out yet, so you can't use that as an example of success. That game could easily bomb on Xbox (it will probably sell fine).