ReCore has only been in development for 14 months??? EDIT: And is just now going into full production???

[Aerys]

And the worst is their team is really small, less than around 30 people.

So there is 2 scenarios :

THe game is a smaller game than we think ( you can make any game look big with a great CGI, look at phantom dust or even fable legends)

Or...It's an other microsoft situation where they announced it way too early to fill their conference and artificially fill the planning before delay the game, while they know it wont make it for 2016