I don't actually like GTA at all. But I do like Watch Dogs alright. I'm nowhere near into the game very far, but I do find it kinda blah in the car missions (blah being frustrating), and I'd prefer to take a stealthy, non-shooting approach to situations any time I can. I like the whole stopping crime thing and hacking whatever, but I don't like when I'm forced out of my desired playstyle to get away from cops or deal with a situation that can't be sneaked through.
Maybe someday I'll get through the game, but I may not.