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.
Flash speed:FTL. (rewound time which is stated to be faster than light)
Quick Silver speed: MFTL (outran Mjolnir which in LAT travelled half the universe in seconds)
Flash has control over electricity and has better durability (able to be stabbed by Kryptonian materials multiple time while quicksilver isn't bullet proof)
strength:QuickSilver
speed:QuickSilver
Durability+IQ:Flash
Agility:Quicksilver
Powes+Hax+Abilities:Flash
Stamina:Flash
Flash wins Mid Diff. 6-3