Not watched the video yet, but who is included in the game depends on what market Warner Brothers wants to send this at.
Zatanna for older people, in college and late twenties, and Raven for younger people in teens and early college years.
If we knew the numbers for what demographic bought MK9, then we could say something.
This is all my opinion anyways.
(In the actual battle, I'd probably root for Raven)