Really? At first I thought you were talking about Cam with the 1 look then tuck and run, because that is typically his MO. Locker's checking down difficulties are mostly due to his O-line imploding in on him. That front line was as water-tight as a wiffle ball. The fact that most of his receivers dropped more passes than they caught doesn't help either. Many of those "force-ins" bounced off receivers chests or blew through their hands. When his line gives him time, he can be very accurate. His mobility is just one of his talents, not the only one... otherwise they would have called more designed run plays for him. Mallet's mobility is almost non-existant. His character is a concern also, something Locker has never had questioned. Locker brings more tools to work with... without the character concerns.