I know what he mean, i did understand it from the beginning but its cheating, thats how i call it. I said that im unable to understand because i didnt actually expect such benchers using dirty tricks and i simply leave it by that. But finally the correct stuff is to leave it at default, means it should use it at the level such as Nvidia does. Its not a bad option to be able to make such finetuning (immense gain for real situation, when you want to get the most out of it) but sadly it does allow for unfair behaviours.
However, with or without tesselation, the 7000 series will clearly beat the 580 GTX in long term, because neither the games nor the drivers are fully optimized yet, the hardware is simply to much of a child at the current date. It already is beating by 20% (overall) at real situations, but the distance will be even higher and surely no "cheating" needed, there is no need for it, its tesselation is superior to the 580 GTX. Even allowing so much finetuning is a clear sign of its superiority. AMD/ATI was always the forerunner of tesselation. Just with the Fermi architecture Nvidia truly was pumping massive effort into it and did even stomp down the 6000 series on raw performance. However, the 7000 series will get the throne back and continuing where AMD/ATI started on its very tesselation capable consumer cards.