The Superhero Database Classification number, or SHDB Class, is a number that represents the overall 'power' of a character. All traits of a character are used for calculating the Classification.
What it DOESN'T mean
This doesn't mean that a higher class would always beat a lower class character. But the bigger the difference in Class is, the more obvious it is who'll win in a fight.
How is this calculated
( INT^1.3 + (STR*0.5 )^2 + (SPE*0.5)^2 + DUR^1.6 + (POW + (SPS*SPL))^2 + COM^1.8 ) ^ TIER
Super Power Score and Level
Every Super Power has a score (SPS) that is used to calculate the Class. Each Super Power also has 3 levels (SPL). The level is set when connecting that Super Power to a character. The level determines the final score, of the Super Power, being used in the calculation.
By entering Eä they became limited (to some extent) to the laws which govern the Universe, and Ainur who entered Eä were later called Maiar or Valar (the superior gods of the Pantheon, like e.g. Manwë were called Valar, and their co-workers or subordinates (e.g. Olórin) were called Maiar).
Melkor (originally a Valar, in terms of rank) has a similar relationship to Sauron (a Maiar, his most important subordinate), as is the case with Manwë - Olórin.