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.
Thor was able to survive the power stone explosion of a ship which can withstand going through a wormhole
Being able to lay harm on the necrosword and gorr which are able to easily slaughter gods
able to save Loki from a black hole
Able to destroy part of the surface of Jotunheim which is made up of frost giant ice which is comparable to asguardian steel
Survived Bifrost Bridge Explosion
All of Thor's feats are much better than Iron-Man's feats.