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

Optimization · Pure Optimization
A surreal puzzle-adventure about nesting worlds inside orbs.

Optimization · Pure Optimization
Linear JRPG built around real-time paradigm switching and stagger combat.
Cocoon leans Optimization (Pure Optimization); Final Fantasy XIII 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.
Cocoon
Inputs are simple movement and a button.
Final Fantasy XIII
Paradigm shifts need timely menu reactions
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Cocoon
Puzzles are fixed designs.
Final Fantasy XIII
Scripted stagger-phase bosses
Final Fantasy XIII leans a little harder on variance, though the gap is small.
Cocoon
No randomness.
Final Fantasy XIII
Minor randomness in enemy actions
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Cocoon
Pure puzzle logic, solvable by reasoning.
Final Fantasy XIII
Paradigm sequencing and stagger timing are solvable
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.