Playing on PC.
And I can definitely say it looks and feels better than gta.
Open world games including GTA usually have loose janky controls. Watch Dogs feels like a more focused action title like uncharted.
Rockstar is unmatched at building a stylish compelling world/time period and keeping you immersed in it. Watch dogs falls short of that, but the world and its inhabitants are much more dense and interactive so it makes for a very different experience.
In GTA the fun is just being a part of the world, in watch dogs the fun is manipulating the world.
The online in watch dogs is a lot better than GTA in my opinion.
Can't say which one is better overall yet, gotta wait till I finish watchdogs.