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
Painterly cinematic puzzle platformer about a girl and her cat-like companion.

Optimization · Practiced Mastery
A minimalist puzzle platformer about cooperating rectangles, carried by warm narration.
Planet of Lana leans Optimization (Practiced Mastery); Thomas Was Alone leans Optimization (Practiced Mastery).
Thomas Was Alone leans a little harder on execution, though the gap is small.
Planet of Lana
Gentle platforming and chase sequences
Thomas Was Alone
Light precision jumps per quadrilateral
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Planet of Lana
Machines follow scripted patterns
Thomas Was Alone
No opponent, narrated rectangles
Planet of Lana leans a little harder on variance, though the gap is small.
Planet of Lana
Fully authored puzzles
Thomas Was Alone
Levels fully visible and fixed
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Planet of Lana
Companion-command puzzles have single solutions
Thomas Was Alone
Sequencing each character's ability per puzzle
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.