The contrary would be worrying, not outsell PS4 at least on Mario Kart week whereas the game has a big effect all over the world would be really disappointing, even against Watch Dogs, Watch Dogs is just a new IP , plus it wont do anything in Japan, not like Mario Kart.
Predictions for end of 2014 HW sales:
PS4: 17m XB1: 10m WiiU: 10m Vita: 10m