I ask this question from a position of virtually complete ignorance, so please forgive me if it appears crass. And before I ask, I should say that to me the pilot of this Hunter was as well qualified to fly this aircraft as anyone out there...
But, how can any pilot, who is not "line flying" the aircraft in question, completely understand the technical nuances of the particular aircraft, to a point where he can adequately cope with any eventuality? I'm guessing that the Hunter (or any other vintage aircraft) has plenty of "characteristics" that can only truly be mastered with many, many hours of familiarisation...