As developmental in terms of producing talent and stars? Ok they might have good shows with good wrestling but what has it produced from scratch? OVW produced Lesnar, Cena, Batista and Orton from scratch that blows away anything NXT has done.
Daniel Bryan came from NXT (not even close to being the same as NXT was an entirely different entity at the time, but just thought I'd point that out) :draper2AA and TR are the only good overall products to come out of there.
NXT gave them exposure, but they were ready made talent. Same thing with Owens, Neville, Cesaro, Zayn and guys there now like Nak, Joe, Roode, Aries etc etc. Its not like these guys were a bunch of rookies who needed to be worked on when they showed up.Most of the wrestling world would have no idea who Tyler Black or Prince Devit was if they hadn't come to NXT and become a star on the main roster