So the big 3 of Holiday 2015 are releasing in different years.

[Roronaa_chan]

Between end of this year and sometime next year both Gran Turismo and God of war will have a release, as will Zelda. Halo 6 could potentially come out in holiday 2017 so there's room for a possible battle there, if Zelda isn't out by Spring, or if Nintendo releases a big Mario game later in the year