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.

Execution · Practiced Mastery
An open-world racer where tuning and racing lines beat the AI field.

Execution · Practiced Mastery
Landmark scripted FPS following Gordon Freeman through the Black Mesa disaster.
Forza Horizon 5 leans Execution (Practiced Mastery); Half-Life leans Execution (Practiced Mastery).
Forza Horizon 5 leans a little harder on execution, though the gap is small.
Forza Horizon 5
Racing line, throttle control, and braking timing matter.
Half-Life
Combat aim and infamous platforming sections
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Forza Horizon 5
AI drivivatars follow fixed patterns; no real adaptation.
Half-Life
Marines flank by script, not by modelling you
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Forza Horizon 5
Weather and event roulette add mild randomness.
Half-Life
Set pieces surprise only on first run
Forza Horizon 5 leans a little harder on optimization, though the gap is small.
Forza Horizon 5
Car tuning, build choice, and tire compound solve races.
Half-Life
Resource routing and encounter knowledge for speedruns
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.