"To assess an opponent's true level by their exhibited battle prowess, that is indeed a good method. However, this battle prowess is not eternally fixed; on the contrary, it fluctuates greatly, and no warrior can guarantee that their displayed battle strength is always at its peak every time." Yu Zhenzi said softly.
Realm and battle prowess are never the same thing; Realm is the cumulative process of a person's cultivation, as long as one doesn't take shortcuts or exploit loopholes, stepping steadily forward, the Realm becomes the most tangible thing and generally doesn't weaken.
But in truth, battle prowess is based on the Realm, showcasing all mastered powers, filled with various probabilities during this process, even divine abilities, the sequence of moves, facing different opponents, all exhibit differently.