As you watch the ninja grow stronger in this manga their is two basic ways that happens: 1. Their "Base" grows stronger permenantly. What do I mean by base? Their overall abilities: fighting, stanmia, intelligence, ect. In example of this could be when naruto was learning how to walk on trees. 2. "Quick power ups" Is learning how to mamimize their powers in a quick brust of power. This would be the curse seal and senjutsu.
so if your trying to judge how strong a ninja is, which one would you use? for example: orchi was a strong ninja but he didnt have an quick power ups. but if jiriya were to fight him seriously, although he was strong, he would have to use natural energy to bost his power to be able to cope with orchi. powers. Lets just say for the sake of this argument, that at their strongest both orchi and jiriya are equally strong. So which ninja would be considered to be stronger? The one who naturally is a badass ninja, or one who is strong but uses power ups to reach badass level?