It was a great throw but not one of the best in nfl history…come on. But is also happened due to down and distance. It was also a risky throw which is well advised on a fourth down when you have little to lose by taking an incomplete or sack or even int. Gotta give yourself a chance and he did. He does not make that throw on first and ten.
Josh Allen understands down and distance, situational football and adjusts his willingness to take a chance based on that. It showed more his football intelligence to me than it was a great throw. If the defender has his back turned the wr is open.