The poll was who would you want to get married to. So they probably thought less about their love life as much as "Look I had a rough day at work can you just cook, clean, take care of the kids, and then have sex with me for me to relive stress. (or I'll just have sex with my mistress later) Thanks." Remember affairs are very common in Japan. This poll isn't looking for love that will last years for them it who would you like to have take care of the home and raise you kids for you for them.
Also I don't watch that much of those other anime could you in one sentence each sum up their personalities ie kosaka is a___. asuna is a___. and so on because i would imaging that it probably the same for most of those girl...just that most of those girl are probably more interesting in their story then hinata. Or it's a character by character thing and hinata fits that one role (in the story she surprisingly a failure at it) perfectly.
Edited by Bail o' Lies, 15 February 2016 - 11:22 PM.