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 survival city builder driven by harsh resource and law optimization.

Optimization · Pure Optimization
A perfect-information tactics puzzle solved one turn at a time.
Frostpunk leans Optimization (Pure Optimization); Into the Breach 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.
Frostpunk
Pausable strategy with no input precision.
Into the Breach
No mechanical inputs
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Frostpunk
No adaptive opponent in the survival city.
Into the Breach
Enemy moves telegraphed fully each turn
Frostpunk leans a little harder on variance, though the gap is small.
Frostpunk
Scenario events and weather pulses add tension.
Into the Breach
Light spawn and squad randomness
Into the Breach leans a little harder on optimization, though the gap is small.
Frostpunk
Resource routing, laws, and heat are solvable.
Into the Breach
Pure puzzle - perfect-information chess each turn
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.