The verdict: On longevity they're evenly matched (long (8–10h) vs long (7-9h)) — skin chemistry will decide. They live in the same scent territory — floral and sweet against fruity and sweet — which is exactly why people cross-shop them.
Paco Rabanne Lady Million (EDP, 2010) against Yves Saint Laurent Mon Paris (Eau de Parfum, 2016): They share a floral-sweet backbone, which is why shoppers cross-shop them constantly. Here's the honest, note-by-note breakdown — longevity, sillage, seasons, and who each one is actually for.
Paco Rabanne · EDP · 2010 · Women's
Accords: floral · sweet · fruity · powdery · woody · honey
Top: Raspberry, Neroli, Amalfi Lemon · Heart: Sambac Jasmine, African Orange Flower, Gardenia · Base: White Honey, Patchouli, Amber
Longevity: long (8–10h) · Sillage: strong
Seasons: fall, winter, spring · Best for: date night, night out, special occasion
Full Paco Rabanne Lady Million breakdown · Check price on Amazon
Yves Saint Laurent · Eau de Parfum · 2016 · Women's
Accords: fruity · sweet · floral · patchouli · white floral · woody
Top: Strawberry, Raspberry, Bergamot, Tangerine · Heart: Datura, Peony, Orange Blossom, Jasmine · Base: White Musk, Patchouli, Ambroxan, Cedar
Longevity: long (7-9h) · Sillage: strong
Seasons: fall, winter, spring · Best for: date night, night out, everyday, special occasion
Full Yves Saint Laurent Mon Paris breakdown · Check price on Amazon