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
Landmark scripted FPS following Gordon Freeman through the Black Mesa disaster.

Execution · Practiced Mastery
An indie love letter to arcade flight combat with relentless missile-dodging dogfights.
Half-Life leans Execution (Practiced Mastery); Project Wingman leans Execution (Practiced Mastery).
Project Wingman leans a little harder on execution, though the gap is small.
Half-Life
Combat aim and infamous platforming sections
Project Wingman
Dense missile spam demands constant evasive flying and aim.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Half-Life
Marines flank by script, not by modelling you
Project Wingman
Enemy aces are scripted set pieces.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Half-Life
Set pieces surprise only on first run
Project Wingman
Fixed missions; conquest mode adds light randomness.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Half-Life
Resource routing and encounter knowledge for speedruns
Project Wingman
Loadout choice and learned mission flow decide harder difficulties.
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.