12g Winchester Supreme vs Winchester X?

[Steiner]

So besides the pellet count and color of the box, any real difference between these two Winchester 12g ammo products?

Winchester Supreme, 12g, 2.75", black box, 00 Buck/9 pellets lead
Winchester X, 12g, 2.75", silver box, 00 Buck/12 pellets lead

 

[madhatter308]

im pretty sure the only difference is the supreme pellets are copper plated wile the X's pellets are just plain lead.