The verdict: On longevity they're evenly matched (long (7-9h) vs long (8-10h)) — skin chemistry will decide. Character-wise, Dior Sauvage wears fresher and brighter while Bleu de Chanel sits warmer and richer. Bleu de Chanel stretches into winter, which Dior Sauvage can't cover as well.
Dior Sauvage (EDT, 2015) against Bleu de Chanel (EDP, 2014): They share a fresh spicy-amber 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.
Dior · EDT · 2015 · Men's
Accords: fresh spicy · amber · citrus · woody · aromatic
Top: Calabrian Bergamot, Pepper · Heart: Sichuan Pepper, Lavender, Pink Pepper, Vetiver, Patchouli, Geranium, Elemi · Base: Ambroxan, Cedar, Labdanum
Longevity: long (7-9h) · Sillage: strong
Seasons: spring, summer, fall · Best for: everyday, office, date night, night out
Chanel · EDP · 2014 · Men's
Accords: woody · citrus · amber · aromatic · fresh spicy
Top: Grapefruit, Lemon, Mint, Pink Pepper, Aldehydes · Heart: Ginger, Nutmeg, Jasmine, Iso E Super · Base: Incense, Vetiver, Cedar, Sandalwood, Patchouli, Labdanum, White Musk
Longevity: long (8-10h) · Sillage: strong
Seasons: spring, summer, fall, winter · Best for: everyday, office, date night, night out, special occasion