6 power scaling

F - Fodder: The weakest individuals with no combat prowess or abilities. They are easily defeated by even moderately skilled fighters.

E - Novice Combatants: Individuals who have received basic combat training or possess limited abilities. While they may have some potential, they lack significant experience and skill.

D - Skilled Fighters: Competent combatants who have honed their skills through training and experience. They can hold their own against average opponents and possess a reasonable level of strength and technique.

C - Elite Fighters: Exceptional fighters who have surpassed the average combatant. They possess advanced combat techniques, heightened physical abilities, and a solid understanding of strategy.

B - Powerhouses: Formidable fighters who have attained exceptional strength and skill. They can overwhelm opponents with their raw power, superior techniques, and extraordinary physical abilities.

A - Legends: Legendary figures revered for their exceptional power and influence. They have achieved remarkable feats, possess unparalleled skills, and are renowned throughout the world.

S - Yonko and Admirals: The Yonko, the four most powerful pirates who command vast territories, and the Admirals, the top-ranking Marine officers, are considered on par with each other in terms of power. They possess immense strength and are capable of shaping the world with their abilities

SS - .Pirate King and Gorosei: The Pirate King stands above all others in terms of power and influence. He has conquered the Grand Line, possesses immense knowledge, and wields unimaginable strength. The Gorosei, the highest authority in the World Government, are equal in power to the Pirate King. They hold immense influence and are the highest governing body in the world.

SSS - ??? and Ancient Weapons: This level represents characters or entities with unknown power, often shrouded in mystery. It also includes the Ancient Weapons, which are ancient artifacts with the potential to reshape the world. Their true power and capabilities are not fully understood but are considered to be on a level above the Pirate King, Gorosei, Yonko, and Admirals.

Power scale is subjective and can vary depending on the context of the story, individual character growth, and unique abilities. Factors such as experience, strategy, Haki proficiency, and Devil Fruit powers play a significant role in determining the outcome of battles and power dynamics in the pirate world.