Zelda is way more recognizable and popular than DQ in west.
That is true but people appear to dig the style of that game and a similar big budget title with awesome graphics may now be more enticing to the western market.
Its going to be interesting to see what SE does when they get to the mobile DQ games that don't have an English translation.
They are all translated outside of 10. It just depends if the DQ7 on mobile is the 3ds remake or the original psx version.