I think you shouldn't fully take the AnandTech comparison as a reference. You need to remember the 7970 GHz Ed. will always prevail at higher resolutions because of its 3GB VRAM (vs 2GB on the 770). You can notice that, at 1920x1080, the 770 is way better in some games.
There really is no "winner" here imo. Your choice should depend on the games you play the most and the resolution of your monitor; it's not wise to generalize and buy a videocard based on "X is better than Y".
That said, I think the 770 is a good card, but it would be better to wait and see what AMD releases against it before jumping to conclusions.
On a side note, I think it would've been better if NVIDIA sold the 780 for around 550 dollars rather than 650. People would go crazy on it.