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 · Practiced Mastery
A strategy shooter testing defense placement economy backed by active gunplay.

Optimization · Pure Optimization
A hybrid real-time and tactical action RPG in a digital city.
Fortified leans Optimization (Practiced Mastery); Transistor leans Optimization (Pure Optimization).
Fortified leans a little harder on execution, though the gap is small.
Fortified
Third-person shooting between waves keeps hands busy
Transistor
Real-time and planned hybrid combat.
Transistor leans a little harder on reads, though the gap is small.
Fortified
Martian waves are scripted compositions
Transistor
Process enemies follow scripts.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Fortified
Wave makeup is known after a single attempt
Transistor
Limited randomness.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Fortified
Defense placement and hero loadout economy decide rounds
Transistor
Function loadouts have deep optimization.
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.