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.
Vader in the comics totally dominated Force Speed, basically he can run at a speed much faster than light speed
Here is a link with several proofs:
https://vsbattles.fandom.com/wiki/Darth_Vader
Vader also has a power called Force Whisper, this power consists of killing whoever he wants with a word.
Vader also defeated all the Jedi Order Padawans alone, and each well-trained Padawan is a star level.
Vader also survived the explosions of a planet and managed to defend himself from shots that Blaster, who were faster than light, who were leaning against his body.
Vader also has other feats like opening dimensions with force and breaking the barrier between the world of the living and the dead.