head to head
Borderlands 2 asks more than Sunless Skies, and the gap is execution.

Optimization · Systems & Chaos
Loot-shooter RPG built on gear chasing.

Variance · Systems & Chaos
A gothic narrative exploration game about flying a steam locomotive through haunted skies.
Borderlands 2 leans Optimization (Systems & Chaos); Sunless Skies leans Variance (Systems & Chaos).
Borderlands 2 leans clearly harder on execution.
Borderlands 2
Aim matters but generous hit feel
Sunless Skies
Slow locomotive combat asks little of the hands
Borderlands 2 leans a little harder on reads, though the gap is small.
Borderlands 2
Enemies are scripted loot fodder
Sunless Skies
Horrors and agents follow scripted storylets
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Borderlands 2
Procedurally generated weapon drops vary
Sunless Skies
Hidden ports, story branches and terror events
Borderlands 2 leans clearly harder on optimization.
Borderlands 2
Skill trees and gear math heavily solved
Sunless Skies
Trade routes and fuel economics are plannable
A matching score does not mean a matching test. Two games can both sit at 10 on execution and demand completely different things of you - which is why the reasoning above matters more than the number beside it.