What's the difference between Xue Fubin's running script Preface to Wang Tengting and Wen Zhiming?

Xue Fubin's running script "Preface to Wang Tengting" is a typical running script, very much like a craftsman's work. Every stroke follows the statutes, and personal characteristics are not outstanding.

Wen Zhiming's running script "Preface to Wang Tengting" is a cursive script with moderate relaxation and flexibility, which is a first-class work. Among all Wen Zhiming's calligraphy works, it is outstanding.