In the pans, these products look pretty similar. The high light shades are very different. The one on the left is more blue while the one on the right is more white/silver. I think you can see the differences more in the swatches. Swatched with no primer.
The brown shade from the 102 pallet on the left is more golden while the shade from 002 on the right is much deeper. I think these two are different enough to have both since the shade of blue in the center isn't very similar either. These shadows need a primer. If I wear them without one, I see major fading after a couple of hours. I also feel that they work better with a sticky colored base under neath them. I usually use my L'Oreal Color Fresco Eyeliner / Shadow Sticks.