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.
Firestorm is by far one of the most underrated characters of DC. His control over all Matter and Energy on a Sub Atomic level does give him an edge here. I will say that if it was any other version of Adam Warlock then Firestorm is losing. However it is not. This version of Adam Warlock has speed as his best trump card in this match up. His energy blasts would not really do much against someone who can absorb all forms of energy and covert energy to any form he wants not to mention if he really chose to he could very easily rearrange Adam's molecules into anything he wanted. Say water or marshmallows...
Firestorm wins 60% of the time in my opinion against this version of Adam Warlock.