Comparing the two fragrances…

Guerlain

Roberto Cavalli
Derby
Just Cavalli Man
Only in Derby
Shared character
Both Derby and Just Cavalli Man contain notes of vetiver, leather, and pimento.
How they differ
Derby is characterized by a wide array of notes including jasmine, lemon, rose, bergamot, pepper, sandalwood, oakmoss, nutmeg, patchouli, tobacco leaf, birch, peppermint, carnation, orange, mugwort, and various woods. Its profile includes accords such as floral, citrus, woody, chypre, green, spicy, smoky, leathery, animalic, aromatic, and warm spicy. In contrast, Just Cavalli Man features lavender and is categorized by the aromatic fougere accord.
Who each suits
Derby suits those who prefer complex profiles involving chypre, smoky, and animalic elements alongside floral and citrus notes. Just Cavalli Man suits those who prefer an aromatic fougere profile.
Only in Just Cavalli Man