Since we're posting about it:
From what I saw, ZTA was just average based on BGLO stepping standards. The steps and overall routine were something a BGLO team would've done in the 1990s (including a Matrix theme).
The crowd was responding to the shock value of white people being able to pull it off since many people have never seen whites step (and relatively well). When I actually dissected the steps, not all of the members were that great. Overall, it was very mechanical and technical with yelling but very little of the heart and soul that would get a crowd to scream for you like that if you're an NPHC team.
Is this what they won for? If so, it is definitely shock value:
http://www.youtube.com/watch?v=016C4sUj5_8