I think so. First there's hacking. Hacking gives Watch_Dogs the edge over GTA V simply because you have so many different options in combat and in car chases. I never feel like it gets old simply because you can approach the same situation in so many different ways. Second, Watch_Dogs has much better items to use in both stealth or combat approaches. In stealth, you can use blackout to turn off electricity in the area, or use the jammer to prevent people/enemies from using their communications equipment. ctOS scan gives you the positions of the enemy in the area. Btw, they seemed to have taken a page out of The Last of Us's book in that you can make these items out of scrap. In combat, you can use IED (like C4), proximity IEDs, frags, and focus boost which they seemed to have taken from Max Payne/GTA. All of these things give you so many different options and they're really a blast to use. Third. the missions in Watch_Dogs never really get redundant or stale. Each scenario comes with a twist. Like in one mission and you actually hack these machines to help fend off the bad guys. And lastly, I enjoyed the weapons in Watch_Dogs much more than GTA. They really do give you a variety to use and the gun handling feels great.
So all together I definitely think Watch_Dogs is the more creative game. GTA pretty much seemed the same game with some additions but the gameplay options are relatively the same.