nas...simply put, is a better rapper than jay-z. jay-z, though, has had a way more succesful career than nas, and, in my opinion, has had more consistently classic material droppin' than nas has had. plus, i think jay has the illest singles compared to nas' shit. nas' club shit compared to jay's club shit is dookie. i think nas is better, lyrically and i think nas has a better story-telling ability, but jay's consistency is second to none.