Thought this would be somewhat interesting to look at; third-party platform ordering.
FPS
Call of Duty: Ghosts - XB1, PS4, NWU
Battlefield 4 - XB1, PS4
Family
Just Dance 2014 - XB1, NWU, PS4
Skylanders Swap Force - NWU, XB1, PS4
Lego Marvel in December* - XB1, PS4, NWU
Sports/Racing
Madden NFL 25 - PS4, XB1
NBA 2K14 - PS4, XB1
FIFA 14 - PS4, XB1
Need for Speed in November** - PS4, XB1
Action-Adventure
Assassin's Creed IV - PS4, XB1, NWU
*Didn't chart in November, NWU was only next-gen SKU in October.
**Didn't chart in December or for 2013
They break somewhat along genre lines.
Although it's probably also worth noting that it could be impacted by respective first-party slate as well, i.e.
Microsoft
Forza - Racing
Dead Rising - Action-Adventure
Ryse - Action-Adventure
Sony
Killzone: Shadow Fall - FPS
Knack - Family
But that aside, the PS4 seems to have a distinct advantage in the annualized sports franchises, while the XB1 seems to have a clear advantage with family titles, even beating the Wii U on a smaller installed base with JD2014 (possibly Lego as well).