It's all in the marketing, as said earlier, they must intimidate fans to purchase the newer generation consoles by edging to not put new and highly anticipated content into the older gen consoles.
They cannot release a game on an old generation console with the same content as the newer...
On Amazon the DOA5 Last Round release date was announced, it is said (On Amazon) that Last Round will certainly release on February 17th for Xbox One and PS4, for a price of $44.99 (Canadian Dollar) !