Negligible difference between them then, on aggregate you'll probably find the 2060 gets slightly better FPS in many games, but it's not much, and equally the Vega comes out on top in other games.
However, I will say that the 2060 has 50W+ less power usage (in design) than the Vega 56, so you technically get more performance for your power. But usually the 2060 also initially costs slightly more.
Negligible difference between them then, on aggregate you'll probably find the 2060 gets slightly better FPS in many games, but it's not much, and equally the Vega comes out on top in other games.
However, I will say that the 2060 has 50W+ less power usage (in design) than the Vega 56, so you technically get more performance for your power. But usually the 2060 also initially costs slightly more.