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.
Feats of Ancalagon
He is said to be probably the greatest dragon in Tolkien's literature and one of Morgoth's most powerful allies in the First Age.
His fire is said to be hotter than all other dragons, in fact Gandalf believes that his fire would be enough to destroy the only ring if he were alive (I think I'm foggy at the last minute).
He and his smaller dragon soldiers repulsed a large number of Great Eagles and Valar armies all day before his death.
Only his death produced enough strength to completely destroy the mountain fortresses of Tangorodrim, as basically 3 massive mountains were wasted only by the dead man of this man.