All HWCompare does is show a theoretical output on a limited set of variables: Power consumption, Memory bandwidth, Texel rate, and Pixel rate. That is far from enough information to tell anyone how that card will perform in the latest games. It's basically a comparison of specs, without any context or any understanding of how that translates to the real world. HWCompare should never be cited as a resource for relative performance in real world situations. Case in point, the 5970 would never be realistically considered a higher performing card than a GTX 690 or Titan.