In case you were wondering why NBC decided to add a third night of “The Voice” season debut this week on Wednesday in the teeth of Fox’s re-boot of “X Factor”: Part 1 of “The Voice’s” now three-night fall season launch attracted 12.3 million viewers from 8-10 p.m. beating, among other programs, the season finales of Fox’s popular “Hell’s Kitchen” and “MasterChef.”