Era bias: Z nostalgia vs. Super scale
Every Dragon Ball list is secretly a generational survey. Z-era rankers anchor on Cell-saga Gohan and Namek Vegeta; Super-era rankers have Beerus and Jiren compressing all mortals into the same tier. Villain rankings are the stable ground — Frieza's four decades of relevance keep him S while newer antagonists cycle. And two axes must never be confused: Mr. Satan is F-tier in power and S-tier in writing, the most correctly-ranked character in shonen history when the list knows what it is measuring.