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.
Subzero is superior in physical terms
And batman is more intelligent and more smarter
In Kombat skills they are bit more equal
So I think the outcome will be unpredictable because both of them have they're own moral cods
Here's another one. He stands in freezing water and doesn't die still. https://imgur.com/a/HByqF
So I mean sub zero can tag him all he wants but when it comes to fighting and smartness. Zero is finished. That's all I have to say.