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 · Practiced Mastery
A comedic first-person exploration romp cataloguing a candy-coloured alien planet.

Optimization · Pure Optimization
A gentle turn-based system easily solved by build and gear choices.
Journey to the Savage Planet leans Optimization (Practiced Mastery); South Park: The Stick of Truth 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.
Journey to the Savage Planet
Light shooting and platforming, forgiving
South Park: The Stick of Truth
Timed attack and block prompts add light input demands
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Journey to the Savage Planet
Creature AI is simple and scripted
South Park: The Stick of Truth
Enemies follow fixed turn-based scripts
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Journey to the Savage Planet
Some unknown creature behaviours on first contact
South Park: The Stick of Truth
Minor damage rolls; encounters are otherwise fixed
South Park: The Stick of Truth leans a little harder on optimization, though the gap is small.
Journey to the Savage Planet
Upgrade routing and scan-everything exploration
South Park: The Stick of Truth
Build, gear and ability choices comfortably solve every fight
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.