I don't think that any of us will be surprised that "sources" are saying that the AMD HD 6970 will beat the new NVIDIA GTX 580 in performance. What else would AMD say after all? It's not as if they can say, "our next card will suck." I like it when these two companies get to goading and competing with each other for the performance crown, and so should you.
Competition like this is when we get new cards with even more performance as they trade the world's fastest title back and forth. The only downside is that the new cards seem to get more expensive each time they launch. The upside is a new faster card means price cuts on older hardware. Kit Guru cites sources that claim the HD 6970.
The sources really don't quantify "beats GTX 580" so we can take this with a massive amount of salt until the cards land and we can see how they work in the real world. We all know that these companies tend to use the benchmarks that make them look the best. Still, the sources claim that the AMD card beat the GTX 580 in a "majority of benchmarks." We shall see.