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 meta puzzle box testing curiosity and one-time discovery more than any repeatable skill.

Optimization · Pure Optimization
A grand strategy game set in a fictional matriarchal world.
Pony Island leans Optimization (Practiced Mastery); Terra Feminarum 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.
Pony Island
Light arcade hopping segments with low demands
Terra Feminarum
light strategic-map movement control
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Pony Island
The devil's tricks are authored scripts, not adaptation
Terra Feminarum
AI factions follow fixed strategic logic
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Pony Island
Meta twists are hidden information that spend on first reveal
Terra Feminarum
battle outcomes and events randomized
Terra Feminarum leans a little harder on optimization, though the gap is small.
Pony Island
Code-tinkering puzzles have fixed discoverable solutions
Terra Feminarum
empire management and strategy dominate play
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.