How does Cormac McCarthy use imagery in Cities of the Plain?

In Chapter IV, the imagery interspersed with the fight is fantastic. John Grady is obviously overmatched. The pimp moves like a cat..... like a conductor leading an orchestra. His movements are smooth, fluid and very fast. The only way John Grady manages to kill him is a fearless, self-sacrificial, downright suicidal move. After John Grady has been cut many times he must realize he is going to lose. Instead of fending off death for as long as possible he lets Eduardo lunge again, but this time does not dodge, or duck at all. He stands still and purposefully lets himself get cut again so that he can kill the pimp. The villain's arrogance, the way he foolishly underestimates John Grady's determination, is really what kills him.