Mhmm, I would not compare Western calligraphy to Far Eastern one. They are completely different, but I guess the basic concept of draft script was based on the idea of faster writing. However, not always you write in cursive script fast, it looks that way, but in fact there is a certain rhythm in writing. If you are interested in reading on how to understand the Far Eastern calligraphy, have a go at one of my articles. See both parts (1 and 2)
How to understand Far Eastern Calligraphy? (Part One) | Beyond Calligraphy