Don't dismiss the power of demo's.
Sure a game may have some epic trailer, but if say at Sony or Nintendo's treehouse they have some game being played basically non-stop that will rank up twitter talk. It wasn't Zelda's trailer that made it destroy the rest by like 2:1, it was it being played like 24/7
So it could be like Arms or Splatoon, or what is demoing? Is Odyssey demoing?