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.
No. No one in Attack on Titan is higher dimensional, this verse doesn't even reach Planetary. I watched and know AOT and they aren't that high in power. Eren can get hurt and even killed by WW2 level weaponry and yet you claim he is higher dimensional. A higher dimensional being can't be harmed or killed by that type of human weaponry. @MoNsTeR has watched and knows about the show too and he will still tell you that they don't scale that high.