head to head
DOOM (2016) asks more than Half-Life: Alyx, and the gap is optimization.

Execution · Pure Mechanics
Push-forward arena FPS where movement and aim are the whole game.

Execution · Pure Mechanics
VR Half-Life where hand-presence interaction defines every fight.
DOOM (2016) leans Execution (Pure Mechanics); Half-Life: Alyx leans Execution (Pure Mechanics).
DOOM (2016) leans a little harder on execution, though the gap is small.
DOOM (2016)
Aim, movement, glory-kill timing all peak.
Half-Life: Alyx
VR aim, reload, and grab inputs intense.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
DOOM (2016)
Demons scripted attack patterns.
Half-Life: Alyx
Combine and headcrabs scripted.
Half-Life: Alyx leans a little harder on variance, though the gap is small.
DOOM (2016)
Minimal encounter randomness.
Half-Life: Alyx
Resource and encounter variance light.
DOOM (2016) leans clearly harder on optimization.
DOOM (2016)
Rune and weapon mod picks meaningful.
Half-Life: Alyx
Few systems to tune.
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.