Knack dominates because of PS4 interest in people around the world, they need a game for their kids to play in their PS4 for the chirstmas which is served by Knack presentation and co-op elements, where Mario is not selling well because people are not interested in buying Wii U due to its weak 3rd Party support, weak hardware compared to PS4/Xbone and it doesn't has that many exclusives that warrant them to get one. But, PS4 shines in the features, power, next gen visuals, many 3rd party releases etc., and also indies and Sony studios games.
GAMING is not about spending hours to pass/waste our time just for fun,
its a Feeling/Experience about a VIRTUAL WORLD we can never be in real, and realizing some of our dreams (also creating new ones).
So, Feel Emotions, Experience Adventure/Action, Challenge Game, Solve puzzles and Have fun.
PlayStation is about all-round "New experiences" using new IP's to provide great diversity for everyone.
Xbox is always about Online and Shooting.
Nintendo is always about Fun games and milking IP's.
