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 · Pure Optimization
A non-Euclidean exploration puzzle testing your willingness to abandon assumptions about space.

Optimization · Pure Optimization
A block-pulling puzzle game about solving deterministic 3D climbing puzzles.
Antichamber leans Optimization (Pure Optimization); Pushmo World leans Optimization (Pure Optimization).
Pushmo World leans a little harder on execution, though the gap is small.
Antichamber
Navigation has no twitch demands
Pushmo World
Pulling and climbing blocks demands no precision
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Antichamber
No opponent; solo non-Euclidean exploration
Pushmo World
Solo puzzle game with no opponent
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Antichamber
World is deterministic once its rules are understood
Pushmo World
Puzzles fully deterministic, nothing hidden randomly
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Antichamber
Deducing the non-Euclidean spatial logic and gun mechanics governing each room
Pushmo World
Working out the pull sequence to climb is the whole game
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.