They have the same songs. It could be that there are two versions of the same album with different covers. I'm sure that there are multiple versions of the same album with the same music, but just different print, publishing, country release, etc (as shown here in their website. Since they are two versions of the same album extended editions, they could be just that.

Or it could be that both include both, like Pink Floyd's Wish You Were Here.

Or the websites don't have the cover of the CD itself as the image displayed, but one people would recognize as the right album they're looking for.