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 · Pure Optimization
A block-pulling puzzle game about solving deterministic 3D climbing puzzles.

Optimization · Pure Optimization
Atmospheric sci-fi puzzler about swapping consciousness between your own clones.
Pushmo World leans Optimization (Pure Optimization); The Swapper 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.
Pushmo World
Pulling and climbing blocks demands no precision
The Swapper
Light platforming; precision rarely gates progress
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Pushmo World
Solo puzzle game with no opponent
The Swapper
No opponent exists
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Pushmo World
Puzzles fully deterministic, nothing hidden randomly
The Swapper
Deterministic rooms with no hidden state
Pushmo World leans a little harder on optimization, though the gap is small.
Pushmo World
Working out the pull sequence to climb is the whole game
The Swapper
Clone-placement puzzles have fixed solvable 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.