NCAA is behind National Duals. ESPN will broadcast it and give major money in the deal. More fans can see wrestling as it will be promoted heavily. Two Title tournaments in one year give more opportunity for the casual fan to see wrestling.
But, some coaches don't like it and are working to nuke the idea and plan.
When it fails the NCAA will use this as a good excuse to further marginalize Collegiate wrestling in saying "See, we were trying to promote the sport but YOU did not want it to happen". They will then stand back as further cuts reduce programs and place the blame on short sighted coaches and elitist 'fans' who don't want wrestling to be more than a fringe sport for the few.