Theres different types of speed with a WR. Acceleration, quickness, top speed, route running, breaks, and DB cushion. The reason Nuk burns people deep isnt because hes a jacoby ford type burner. Its because due to his incredible route running and breaks the DB cant turn his hips and run as soon in his drop as he normally does. He has to stay square a split second longer to respect any underneath routes he runs so great. Hes complete. Just not elite speed, but IMO thats not the main deal.
