^In some tests it equals or tops the 5970. So while technically true that on average it 'loses' to the 5970, it's hardly by much. If the ATI fanboys were dismissing 16% increases as 'tiny' or 'negligible' when the 480 first came out compared to the 5870, I think the Nvidia fanboys can do the same for the 580/5970 considering the performance gap between them is much less than 16%