head to head
Gradius V asks more than Half-Life, and the gap is optimization.

Optimization · Practiced Mastery
A formation-based horizontal shmup where managing your options configuration and memorising scripted enemy patterns is the game.

Execution · Practiced Mastery
Landmark scripted FPS following Gordon Freeman through the Black Mesa disaster.
Gradius V leans Optimization (Practiced Mastery); Half-Life leans Execution (Practiced Mastery).
Gradius V leans a little harder on execution, though the gap is small.
Gradius V
Maintaining power-up state through dense formation fire demands precision
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.
Gradius V
All enemy patterns are scripted Konami-classic formations
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.
Gradius V
Minimal; stages are nearly deterministic
Half-Life
Set pieces surprise only on first run
Gradius V leans clearly harder on optimization.
Gradius V
Options configuration, power-up sequencing, and checkpoint recovery are fully solvable
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.