"Learn how to judge a song" was not meant to be taken seriously. And what's wrong with attempting to convince others to choose the singer you think is best? I am not trying to dismiss the male singer as a bad singer. He's obviously very good. However, he didn't display as much talent as the female singer, who is really not getting as much attention. In some parts, I am being subjective (such as kokoronashi being one of my favorites songs). But objectively she is much better (in terms of control, pitch, and range and others) and the fact that people don'r see it irks me for sure.