Watch Your Back Rulebook?

[sparty]

Is the Watch Your Back rulebook any different from Famous Aces? I know Burning Drachens is posted as is the Miniatures (Deluxe) & Famous Aces. I wasn't sure if the one for Watch Your Back had anything special or different in it.

Thanks for the help!

[Oberst Hajj]

I think BD and the Miniatures books cover every thing in WYB.