"Better" is subjective. The Aorus should have the better build quality, and the slight edge in cooling performance as the ASUS Dual is very much a "budget" orientated card.
The Dual however, does have slightly fast clock speeds (in OC mode, at least).
https://www.gigabyte.com/ph/Graphics-Card/GV-N1060AORUS-6GD-rev-20#sp
https://www.asus.com/ca-en/Graphics-Cards/DUAL-GTX1060-O6G/specifications/
What kind of prices are you looking at? The clock speed gap should be able to be closed with a bit of a manual OC....