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.
He consistently tanks hits from High-Tiers 616 characters even mind controlled and bloodlusted, has tanked explosions that could destroy several mountains ranges and only scratched the paint of his armour, two times also tanked a west coast explotion that should be way above country level durability, even one time he tanked the destruction of his Sol's hammer weapon(which is bigger than the sun) and after he tanked the explotion he was floating in the sun and flies back to earth just fine. Just some feats.
What Kratos actually do?