Two men, each a hardened warrior, each with a single goal: survive. Their wills are iron, their bodies are steel, and their entire being is wrapped around the intensity of their deadly purpose. Only one will stand victorious at the bitter end, and each will give anything, and everything, to make sure that it's him.
You've got to give props to Epic Games: they know how to make a good tech demo. The game developer's demonstration of the Unreal 4 engine might not have the same technical brilliance as NVIDIA's Ira face or a room full of furniture on the latest Tegra K1 hardware, but it's much more entertaining. Unreal 3 already powers some of the games with the best graphics on Android, and if "Rivalry" is any indication, the next iteration will be dramatically better on hardware that can handle it. Epic and NVIDIA are currently demonstrating the Tegra K1 system, Unreal 4, and the improved graphics available in the Android Extension pack at Google I/O.
As a dedicated gamer, I'd say that the visual effects on display are a bit above Xbox 360/PlayStation 3 level... though I must point out that it's much, much easier to make something look good with an environment that doesn't have to deal with real-time game elements. Still, this does indicate that the Tegra K1 will be able to power games with drastically improved visual design, once games that can utilize that power are developed and released. Now if Epic would only make some actual games for Android, we'd be in business.