He is this season's Daniel Bryan, having accomplished almost as much in the indies (ROH and overseas wrestling promotions). Looks like WWE is pulling credible wrestlers from other promotions to help build NXT and eventually it's own roster.
To see great examples of Kaval's work in the indies, go to You Tube and search for Low Ki...this was his name in ROH and I'm sure there are plenty of vids showcasing his amazing run while there.