To argue one genre is superior to another is a subjective opinion.
In terms of sheer effort surely a composer that creates for an entire orchestra would have to win hands down over a simple illiterate peasant folk tune. Which of the two is the superior is down to personal taste. It is rather like a fine wine. A master sommelier may praise it to the heavens but others may compare it to swigging battery acid. To illustrate further I enjoy most of Ewan MacColl's songs providing he is not the one performing them. I like and can appreciate his creative artistry, but I simply do not like his voice.