Here's some more accurate comparisons:
Top notes : Artemisia, Bergamot, Cumin, Gardenia
Middle notes : Jasmine, Patchouli, Vetiver, Sandalwood
Base notes : Leather, Oakmoss, Castoreum, Amber, Musk
Top notes : Laurel, Artemisia, Coriander, Bergamot
Middle notes : Carnation, Cinnamon, Geranium, Jasmine
Base notes : Vetiver, Patchouli, Amber, Oakmoss, Civet, Leather, Musk
Well, both belong to the chypre family, for starters. When it comes to notes, both have artemesia and bergamot in the topnotes, jasmine and florals in the middle notes, and leather, oakmoss, amber, and animalic (civet for Kouros and castoreum for Aramis) basenotes.
So, they have quite a bit in common, actually.