After listening to both showcases once (that's usually the all you get, one shot at it), the 1st showcase kept my attention much more than the 2nd.
In my honest opinion, I would remove the segment in the 1st showcase with the woman's vocals. It just seemed to break the flow you have going throughout the rest of genre. It sounds awesome, I also liked the War Siren bit in your 2nd showcase, it sounded like it should be in the 1st one.
Great job, Good luck with the Royalties.