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 · Practiced Mastery
Solving fixed grab-hand puzzles between scripted chase scares.
Pony Island leans Optimization (Practiced Mastery); Poppy Playtime leans Optimization (Practiced Mastery).
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
Poppy Playtime
GrabPack puzzles and chase sequences ask light dexterity
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
Poppy Playtime
Toys follow scripted chase triggers, not minds
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
Poppy Playtime
First-time scares rely on unknown scripted events
Pony Island leans a little harder on optimization, though the gap is small.
Pony Island
Code-tinkering puzzles have fixed discoverable solutions
Poppy Playtime
Circuit puzzles have single fixed solutions
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.