I don't get it. The games you listed all launched in 2013 - Call of Duty, Battlefield, and AC4. With the exception of Halo, but we're only getting an HD collection anyway.
The versions of those games releasing this year are going to be full-hog. AC has a title for current and last gen, Activision says the new CoD is "next-gen first" and this years Battlefield is almost certainly in the same boat as that.
Even though the latter two are probably cross-gen, the experience will be all the more favorable on PS4/XBO. The gap is going to be wider than it was last fall. Even if only slightly so.