Total War Shogun 2
Total War Shogun 2 has a DirectX 11 patch, developed in collaboration with AMD. Among other things, it gives tessellation support and a higher quality depth of field effect.
We tested it in DirectX 11, at max quality.
The Radeon HD 7970 has an impressive advantage over the GeForce GTX 580 here: +53%. So it does pay to work with developers! Except at MSAA 8x where the results aren‘t however quite as good: +12% only.
At 2560x1600 the Radeon HD 7970’s advantage over the GeForce GTX 580 is 62%.