The issue with these "insiders" looking at stats like this is that they put it all on the QB. How do the decide if the QB missed their receiver or if the receiver ran the route wrong or just off enough. QB's are throwing to a spot, because the receiver is 10-20 yards away from their spot when the ball is launched.
So, really, if a QB isn't having success on longer passes it's a combination of that QB and the WR timing and accuracy.
I think Drew deserves his props, but so does our receiving corps, WR coach, Offensive Coordinator and Sean Payton. He runs a tight ship where little mistakes aren't OK.