Who do you believe won?
Since Takeover and Ether were the main, most hard hitting punches they gave each other they'll be the most debated but there are also others like Supa Ugly, the response to Ether and then it goes on to others like Last Real Nigga Alive and Blueprints 2. H to the Omo is also included and Everybody's Crazy from Nas.
A link to [url=http://en.wikipedia.org/wiki/Nas_vs._Jay-Z]Wikipedia[/url] with alot more information.
I believe Nas won this battle hands down.
With Ether becoming one or even The most infamous diss track ever and even creating a new term, how can you not win?