it's not "femininity" that the West doesn't respond to,its extremely high-pitched singing that sounds off-putting there. Izone songs were all high and made several members sound like chipmunks. Twice also did a lot better in the US when they started singing in lower ranges
also yeah, the amount of members was a con too. wjsn's music is all chefs kiss level but they still arent as popular because theyre one of the largest ggs that there is