kansaw :
RX 480 4GB > GTX 1060 3GB > RX 470 4GB
Only correct to a degree, the RX 480 4GB and the 1060 3GB perform almost identically, but:
A. you won't really use up to 3GB of VRAM at 1080p anyway in most cases save for a few intensive titles, I mean look at the 970.
B. the 1060 outperforms the RX 480 by a miniscule margin in most titles and is far better optimized.
C. the 1060 3GB is often far cheaper, putting AMD in a strange spot.