They sure look the same. Cant find enough specs regarding constructino and features to compare. From what I can tell they seem identical.

http://www.motardinn.com/motorcycle-equipment/agv-skyline-mono-carbonglass-matt-black/25192/p

http://www.pure-ducati.com/p-1218-ducati-dark-rider-agv-s-4-helmet.aspx

Highly likely.

Ducati doesn't make any of it's own gear. Historically it's been Dianese that makes jackets pants etc. and a couple helmet makers have supplied the helmets for Ducati branding.

The Ducati Dark Rider is made by AGV which is why I suspect it might be the same