Should I make a Batman game named Batman:Legacy or a Watch Dogs game?

Batman:Legacy

Play as Batman and meet popular characters like Harvey Dent/Two-Face, Floyd Lawton/Deadshot, and The Joker, and save Miagani Island after it's isolated from the rest of humanity.

Watch Dogs

Play as Lincoln Pain and become the next Watch Dog. You can destroy or save the city of New York, with the help of ClockWork and other new characters.

Batman. Always. Batman.

Batman.
He appeals more to popular culture.