I would have spent the whole flight thinking "if the plane goes down, i'm ready. I can die at peace" Or secretly sketching him lol.
I think they're talking about how his facial features give out some info about his character? That you can see his strength even in the facial features (like, people with this kind of nose have good endurance, that kind of thing) I think they also said in the beginning that his face says he has the ability to move the hearts of a great number of people.