People were drooling over CGI trailers the Order(last year), Bloodborne, Destiny(last year) and many others without a lick of gameplay all because they are exclusive to their console. Maybe this game just looks like it will be fun and has some new mechanics to add to a genre that has mostly run dry with ideas. People got to play and see the game in action and has good word of mouth.
If this were PS4 exclusive by Media Molecule or X1 by Rare, a certain group of people would go nuts for it too. Even if it were an indy game it would have good press cause people that have played it think its good.
Getting an XBOX One for me is like being in a bad relationship but staying together because we have kids. XBone we have 20000+ achievement points, 2+ years of XBL Gold and 20000+ MS points. I think its best we stay together if only for the MS points.
Nintendo Treehouse is what happens when a publisher is confident and proud of its games and doesn't need to show CGI lies for five minutes.
-Jim Sterling