During the technical presentation, there was a surprise of sorts. NVIDIA, along with the assistance of Mark Rein from Epic Games, pointed out a rendering flaw in ATI's R360. The ATI hardware did not seem to render all of the detail textures. This was a huge surprise to the audience, as none of us had seen the flaw in ATI hardware before.
There was a second example in the AquaMark 3.0 benchmark in the Massive Overdraw scene where NVIDIA pointed out another flaw in ATI's rendering strategy. The scene should look like a washed out bright spot, but the 'Red' company's render of the same frame looked like several textures were being left out.
There were also quite a few pointed barbs at ATI, oops, I mean the 'Red' company. All of the developers present, some seemingly acting out some sort of strained confessional, were pointing out that sure, the ATI cards were indeed faster, but they also weren't drawing everything either, like the detail textures and alpha values. These kinds of image quality issues are hard to prove, so take it with a grain of salt.
Apparently NVIDIA has known about these particular ATI issues for some months now, but as a general practice, doesn't write white papers about its competitor's hardware.
http://www.guru3d.com/article/article/91/1