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.
This lets them take down bigger, more powerful foes. Stat wise, Link trumps Spiderman.
He has a sword and shield and the only thing Spiderman can do about that is get rid of them. The way for him to do that is to obviously web it away from him but Spiderman's webs can be easily cut by sharp objects, like
the Master Sword.
Honestly, 1 sword swipe would hinder Spiderman greatly, and Link can easily block punches with the Hylian shield. Not to mention his other ludicrous items