I just don't score it any additional points whatsoever when sexual images are interwoven into a game for no reason. The buxomness of these women isn't anything to do with the story, they just come from a universe where all women are in someway like that.
So? A lot of elements can be put into a story for no reason other than themselves. That doesn't make them any less interesting. You can take almost any form of fictional world and find countless impractical elements that still lend themselves to the story through their own merits.
Broad chested men aren't sexual just simply for the fact that they exist.