Okay... Even I think the art has become terrible now.
When it comes to the advantages Connie has it's not just her bodytype. As a blonde she was constantly influenced since birth by positive, strong and able role models in every media from casual adds in the street, magazines and television to novels, television and the internet. The Japanese girls on the other hand have from their birth been deliberately subjected to portrayals of dark-haired females as weak, insecure women who are constantly met with failure and defeat in every form of media. And that is true in the world in general. Japanese society itself is even worse in portraying dark-haired women as less capable and women with lighter hair colors as equal or superior to men.
The psychological chasm is so great that the way things are in the world in terms of how women are portrayed in media, by rights the competitions for women in most sports should be split in two.
What I take away from this chapter is that Kaoruko hit the nail on the head about everything but how Ayano regards other people. I've never known her really look down on others.
But for the second time we have the relationship between mother and daughter explained to us in a nutshell here:
Ushika blames herself for the life Ayano got, but the truth is that this is the life Ayano was always going to have.
No matter how unconsciously she did it to herself as a kid, Ayano always wanted to play badminton and always wanted to compete and grow stronger. Even when Ushika invented rules in order to cut short their games out of fear of what her daughter was becoming.
This is what the mangaka wanted to create: An exceptionally gifted girl who is genetically predestined to always wanting to play, always wanting to compete, always wanting to improve. A genius. And the drama of this story is that mother and daughter are both still struggling to accept that destiny. That is why this manga started out with Ayano refusing to play badminton. Her learning to accept herself is the basic premise of the story.
That's not to say Ushika didn't make a terrible decision to leave Ayano or that it didn't affect Ayano. But that is not the real reason behind Ayano's inner struggle. Ayano has to learn to accept herself. And Ushika has to accept that Ayano being who she is is not due to her failing as a mother.