En måske vigtig detalje de beskriver: Note that results cannot be compared between GPUs. This is not like a standard FPS or frame-time benchmark. This is purely an API test, and so any delta between nVidia and AMD hardware should not be regarded as superiority or inferiority. We tested using a Titan X - just because it's new and we thought it'd be interesting to see how many draw calls it can pull off - and the 290X for Mantle testing.
Det er jo en benchmark hvor antallet af 'draw calls' er den begrænsende faktor, dvs. at det udelukkende er det der afgør hastigheden i dette tilfælde. Men der skal jo meget mere til at lave en 3D scene.