You do put logs and splits into this thing. The gas helps in lighting and maintaining that "firebox". The rest goes into maintaining the temp automatically which frees up time for doing other aspects of the restaurant business. The rotisserie makes loading/unloading easy and helps product uniformity.
Maybe an old-time
pit boss and offset can do better. But consistency is always a problem when your business model is based solely on employee expertise. To say nothing of scale-up and growing your business.