A Neitos was nowhere near the level of discipline and training as a legionairre. They were not elite. They weren't nobles. They were merely privileged in the sense that their main duty was to serve their local chief in times of war and were provided special equipment for this purpose - a warrior class far from the distinction of a professional army. When their tribes were not at war, they would live the life of a regular citizen, working farms and indulging in trade.
They were every bit as well equipped, if not more so, and while lacking elite training, were well disciplined, professional in the sense that they were full-time warriors, and amazing.