Just my opinion, really, but Watch_Dogs quite doesn't qualify, seen the ridiculous optimization towards Nvidia...
I mean, I had a hard time running it constantly at 60fps on medium-high settings, 1080p resolution, while friends of mine and reports of people all over the internet could run the same without too much effort...
The only difference between me and them is that I have an Asus R9 290x DCUII OC, while others usually have a GTX 770 of the cheapest available partner...
To be accurate, however, I literally played on release week, so some patches which improved performance might have (hopefully) gotten out by now.