Card may also be faded. MJs also are synonomous with print defects like dots and such too which may not show on a scan.
I will say, I own a high grade MJ rc that when I recieved was surprised at some seriously dodgy edges on it, and still dont know how it got such a good grade.
86 fleer are gradely very harshly on centering. Thats where your 5 came in. But at best, its still only a 6.