I was setting up a skirmish game tonight and I noticed something about the Rocky Outcrop/Spikes terrain cards.
First, get out those two terrain cards and the corresponding terrain pieces. Next, flip both pieces to the Rocky Outcrop side and compare the images to the ones on the terrain cards. Place the corresponding terrain token next to the matching deployment card. (You'll see that they aren't identical because one has four, bright, small rocks around the large outcrop surrounding the edge that is indented.)
Now, flip them over. You'll see that the images on the spike terrain tiles are swapped relative to the images on the terrain card.
This is not an issue by any means. Just something quirky that I noticed.