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 destroyed the entire Yellow Pawn Multiverse after killing all alternative variants of White Kingactus.
The two Towers stated that it is the most powerful threat Bishop has ever claimed. This places him above Chesspetua and the guardians of the Black Chessverse.
The Towers went on to say that he is the most powerful of the Ones who dwell in Chessness. The Ones who dwell in Chessness include Ebony Knight and the Queen of Castling. If you remember correctly, only one of Ebony Knight's Horsemen was powerful enough to put the King in check (although in the end the White League won).
So, the Piece in the Shadows is a powerhouse: he would beat M.C.D.P.S Agent, mid diff