head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is optimization, and it is a single point.

Optimization · Pure Optimization
A gentle turn-based system easily solved by build and gear choices.

Optimization · Pure Optimization
An open-world fantasy RPG whose modular magic and crafting systems reward heavy theorycrafting.
South Park: The Stick of Truth leans Optimization (Pure Optimization); Two Worlds II leans Optimization (Pure Optimization).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
South Park: The Stick of Truth
Timed attack and block prompts add light input demands
Two Worlds II
Loose action combat, low ceiling
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
South Park: The Stick of Truth
Enemies follow fixed turn-based scripts
Two Worlds II
Enemies follow fixed AI
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
South Park: The Stick of Truth
Minor damage rolls; encounters are otherwise fixed
Two Worlds II
Loot rolls and unexplored map
Two Worlds II leans a little harder on optimization, though the gap is small.
South Park: The Stick of Truth
Build, gear and ability choices comfortably solve every fight
Two Worlds II
Spell-card crafting and builds break the game
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.