The 1060 is faster the 480 in old games. However newer games will use technologies like asynchronous DX12 and Vulkan. Ashes of the Singularity and Hitman are good examples of the former, and the Vulkan build of Doom is a good example of the latter.
The 480 is faster than the 1060 in those 3 games. Doom/Vulkan is a *lot* faster on the 480.