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 also has limitless manipulation of the dream world, is unkillable there except for holy items, is like Charles Xavier on a foe's fear(the Mask's viruses), and he's a great actor/shapeshifter/creator of illusions to get you to fall for just about anything(he made a wizard chjId convinced through his acting that he'd win and then he killed him almost immediately thereafter)! Like I alluded to, doesn't the Mask have a weakness to the cold virus and other viruses; again, Freddy as far as is aware has limitless capabilities in a dream. Ipkiss showed hypnosis, but his powers are magical and Freddy has shown with the Wizard Master that he isn't vulnerable to magic. Plus, Krueger can greatly effect a foe's body directly. The only weaknesses that I feel he has are holy items(a lot of foes would not think of that) and a non-magical power that was telepathy(it can force him to send you back to reality--maybe). But, you'd still have to hope he doesn't kill you before you use your power on him. That may require that you are like Martian Manhunter/Emma Frost(diamond form) and a good enough actor to act like you're worried(so that he reveals himself in an attempt to kill you and you would then use your telepathy on him). I SEE THIS AS ONE SIDED FIGHT FOR AS LONG AS IT LASTS FOR KRUEGER!