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

Optimization · Pure Optimization
A nonviolent, cozy city builder about rebuilding civilization across hex-tile islands and planets.

Optimization · Pure Optimization
The archetypal idle game where optimal purchase order is the entire skill.
Before We Leave leans Optimization (Pure Optimization); Cookie Clicker 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.
Before We Leave
Relaxed pace; no combat or timing pressure.
Cookie Clicker
Clicking is optional past the early game
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Before We Leave
No opponents at all; space whales are scripted hazards.
Cookie Clicker
No opponent
Cookie Clicker leans a little harder on variance, though the gap is small.
Before We Leave
Hex planet layouts vary slightly between runs.
Cookie Clicker
Golden cookie timing randomness
Cookie Clicker leans a little harder on optimization, though the gap is small.
Before We Leave
Supply chains across hex islands and planets are the entire test.
Cookie Clicker
Purchase order and ascension math are the 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.