Square Enix set the tone for Thief by saying, "Garrett, the Master Thief, steps out of the shadows into the City. In this treacherous place, where the Baron’s Watch spreads a rising tide of fear and oppression, his skills are the only things he can trust. Even the most cautious citizens and their best-guarded possessions are not safe from his reach." The Thief series has been popular for years, not only for its interesting story lines and unique gameplay, but because the games have consistently featured excellent graphics and imagery, and leveraged bleeding edge technology, like AMD's Mantle API, for example.
We saw more of the same in the Thief benchmark. The Radeon R9 380X is clearly superior to the GeForce GTX 960 and Radeon R9 285, but can't quite catch the more powerful (and more expensive) cards like the R9 390 or GTX 970.