Is a 90 minute film boring? Are 30 second adverts better? Are books boring? Are short newspaper columns better? Is a big painting boring? Are miniatures better?

These are irrelevant questions. Films and adverts do different jobs, as do books and columns, and large paintings and miniatures, as do short songs and big ballads. Big ballads are written that way for a purpose. They build, they create drama. They take as long as they take, like a good novel, like a gripping film.

Whether a big ballad is any good depends entirely on the quality of the verses, the durability of the melody, the performer and the performance - and indeed the audience. It has nothing to do with the length, any more than The Lego Movie (100 minutes) is better than Gone With The Wind (238 mintes) because it's shorter.