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
American trucking sim about long hauls and growth.

Optimization · Practiced Mastery
A strategy shooter testing defense placement economy backed by active gunplay.
American Truck Simulator leans Optimization (Pure Optimization); Fortified leans Optimization (Practiced Mastery).
Fortified leans a little harder on execution, though the gap is small.
American Truck Simulator
Truck handling and trailer parking
Fortified
Third-person shooting between waves keeps hands busy
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
American Truck Simulator
No adaptive opponents
Fortified
Martian waves are scripted compositions
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
American Truck Simulator
Traffic and weather variance
Fortified
Wave makeup is known after a single attempt
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
American Truck Simulator
Fleet, garages, route economics
Fortified
Defense placement and hero loadout economy decide rounds
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.