is Splatoon receiving more attention because its an exclusive Nintnedo shooter?

[AlphaCielago]

Splatoon could create its own audience like Mario Kart did.
Mario Karts audience differs greatly from the other racing games and Splatoon is meant to do the same thing.
Nintendo would probably want it to have its own monopoly for that specific type of audience with the genres they have.
The audience Splatoon has is most likely going to be closer to the Mario Kart audience than CoD.