Robinson has completed 46 of 70 passes from under center in his career. That's a 65.7 percent completion rate. As if that weren't eye-catching enough, consider this: As a dropback quarterback, Robinson has thrown 12 touchdowns and only one interception and has a passer efficiency rating of 197.9 under center.
Good article from ESPN analyzing Denard's QB play under center vs. out of the shotgun.