Exclusives do matter, even more so for Nintendo. One of the biggest problems with the Wii U was that Nintendo's release schedule for those vital exclusive games was abysmal. Especially in the crucial first 12 months.
First 12 months of Wii U exclusives...
November NSMBU (Underwhelming paint by numbers sequelitis.)
August Pikmin 3
But what about Windwaker HD? Sorry but remakes/remasters are available on an older system and thus not exactly exclusive. They also don't tend to move units unless they have Kart in the name.
The sentence below is false.
The sentence above is true.