head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Optimization · Pure Optimization
A physics-contraption puzzle about engineering Rube Goldberg machines.

Optimization · Pure Optimization
A park management puzzle where understanding the guest happiness formula lets you solve each scenario optimally.
Crazy Machines 3 leans Optimization (Pure Optimization); RollerCoaster Tycoon 2 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.
Crazy Machines 3
Placing parts has no twitch component
RollerCoaster Tycoon 2
Track building is grid-based with modest placement precision demands
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Crazy Machines 3
Solo puzzle - no adaptive opponent
RollerCoaster Tycoon 2
Guest behaviour follows fixed preference scripts
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Crazy Machines 3
Physics deterministic but chains feel lightly chaotic
RollerCoaster Tycoon 2
Very little randomness once ride stats are understood
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Crazy Machines 3
Engineering a working contraption is the whole game
RollerCoaster Tycoon 2
Pricing, ride stats, and park layout are near-perfectly solvable
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.