Power Ranking (Weakest to Strongest)
Rank F
Rank E
Rank D
Rank C
Rank B
Rank BB
Rank A ( Clan Destroyer ) { Early, Weak, Middle, Late }
Rank AA ( Sect Destroyer ) { Early, Weak, Middle, Late }
Rank AAA ( City Destroyer ) { Early, Weak, Middle, Late }
Rank S ( Kingdom Destroyer ) { Early, Weak, Middle, Late, Peak }
Rank SS ( Empire Destroyer ) { Early, Weak, Middle, Late, Peak }
Rank SSS ( Calamity Bringer ) { Early, Weak, Middle, Late, Peak }
Rank X ( Advanced Calamity Bringer ) { Weak, Middle, Late, Peak }
Rank XX ( Continent Disaster ) { Weak, Middle, Late, Peak }
Rank XXX ( Advanced Continent Disaster ) { Weak, Middle, Late, Peak }
Rank Z ( Pseudo Demi God ) { Weak, Middle, Late, Peak }
Rank ZZ ( Demi God ) { Weak, Middle, Late, Peak }
Rank ZZZ ( Advanced Demi God ) { Weak, Middle, Late, Peak }
Rank Y ( Pseudo God ) { Weak, Middle, Late, Peak }
Rank YY ( God ) { Weak, Middle, Late, Peak }
Rank YYY ( High God ) { Weak, Middle, Late, Peak }
Rank I ( World Buster ) { Weak, Middle, Late, Peak }
Rank II ( World Disaster ) { Weak, Middle, Late, Peak }
Rank III ( World Destroyer) { Weak, Middle, Late, Peak }
Then Lastly this few ranks...
Rank O ( Realm Bringers ) { Weak, Middle, Late, Peak }
Rank OO ( Realm Disaster ) { Weak, Middle, Late, Peak }
Rank OOO ( Realm Destroyer ) { Weak, Middle, Late, Peak }
Rank Σ ( Realm Creation/Destruction ) { Weak, Middle, Late, Peak }
...
Then Treasure Ranking
Rank F ( Common )
Rank E ( Uncommon )
Rank D ( Rare )
Rank C ( Unique )
Rank B ( Special )
Rank A ( Epic )
Rank S ( Legendary )
Rank SS ( Mythical )
Rank SSS ( Supreme Artifact )
Rank X ( Godly )
Rank XX ( Immortal )
Rank XXX ( Eternal )
This is for the treasure ranking, above Rank X Treasures are heaven defying.