Robot Heroes Packaging Variant

My apologies for the low resolution picture, but my cell phone was all I had with me when I was at the toy store recently. I don't normally make it a point to chronicle packaging variations, but this one was significant enough to catch my eye. Both of these packages displayed here are of the Cheetor/Blackarachnia Robot Heroes 2-pack. If you look in the upper-right-hand corner, you'll notice the difference between the two packages. The one on the left has both Autobot and Decepticon faction symbols side-by-side, while the one of the right has only an oversized Autobot faction symbol. Does anyone know why this change was made? It seems rather arbitrary to me.