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
Pure factory-layout optimization with no pressure, randomness or opponent.

Optimization · Pure Optimization
A classic management sim about building profitable, animal-friendly zoo exhibits.
Shapez leans Optimization (Pure Optimization); Zoo Tycoon leans Optimization (Pure Optimization).
Shapez leans a little harder on execution, though the gap is small.
Shapez
Placing belts has no time pressure at all
Zoo Tycoon
Mouse-driven building, no time pressure
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Shapez
No adversary exists anywhere
Zoo Tycoon
No opponents
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Shapez
The infinite map's shapes are mappable immediately
Zoo Tycoon
Animal needs are deterministic once learned
Shapez leans a little harder on optimization, though the gap is small.
Shapez
Designing efficient cutting and merging factories IS the game
Zoo Tycoon
Exhibit suitability, finances, guest flow are solvable systems
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.