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
Linear JRPG built around real-time paradigm switching and stagger combat.

Optimization · Pure Optimization
A class-based adventure-RPG hybrid about solving puzzles as a chosen hero archetype.
Final Fantasy XIII leans Optimization (Pure Optimization); Hero's Quest: So You Want to Be a Hero 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.
Final Fantasy XIII
Paradigm shifts need timely menu reactions
Hero's Quest: So You Want to Be a Hero
minimal action, some timed puzzle sequences
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Final Fantasy XIII
Scripted stagger-phase bosses
Hero's Quest: So You Want to Be a Hero
scripted monster encounters, no adaptation
Hero's Quest: So You Want to Be a Hero leans a little harder on variance, though the gap is small.
Final Fantasy XIII
Minor randomness in enemy actions
Hero's Quest: So You Want to Be a Hero
random encounters and skill-check rolls
Final Fantasy XIII leans a little harder on optimization, though the gap is small.
Final Fantasy XIII
Paradigm sequencing and stagger timing are solvable
Hero's Quest: So You Want to Be a Hero
class-based build and puzzle-solving depth
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.