you gotta remember that Qora is very young compared to NXT. The dev is really competent, churns out features at an unbelievable rate.  Qora is still more or less undiscovered, but has an awesome community around it already. Ofcourse there would be room for more than one system to grow. I'm sure a few years down the line, both the systems would borrow/learn from each other. Success in this domain is not mutually exclusive.