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

Optimization · Practiced Mastery
A lovingly pixelled aerial adventure where Otus carries gunner friends through floating islands.

Optimization · Practiced Mastery
Painterly cinematic puzzle platformer about a girl and her cat-like companion.
Owlboy leans Optimization (Practiced Mastery); Planet of Lana leans Optimization (Practiced Mastery).
Owlboy leans a little harder on execution, though the gap is small.
Owlboy
Flying and gunner-swapping in light combat
Planet of Lana
Gentle platforming and chase sequences
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Owlboy
Scripted pirates and bosses
Planet of Lana
Machines follow scripted patterns
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Owlboy
Hand-crafted, deterministic world
Planet of Lana
Fully authored puzzles
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Owlboy
Boss patterns and secrets are learnable
Planet of Lana
Companion-command puzzles have single 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.