head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Execution · Practiced Mastery
A slow horror-leaning Doom reboot built on darkness and scripted ambushes.

Execution · Practiced Mastery
Refined sequel deepening Metro's stealth and moral undercurrents.
Doom 3 leans Execution (Practiced Mastery); Metro: Last Light leans Execution (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Doom 3
Closet ambushes punish slow target acquisition
Metro: Last Light
tighter gunplay than 2033, still deliberate
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Doom 3
Demon spawns are scripted triggers, not adaptation
Metro: Last Light
scripted enemy encounters
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Doom 3
Darkness hides ambushes until memorised
Metro: Last Light
hidden morality system opaque first time
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Doom 3
Ammo management and trigger knowledge trivialise replays
Metro: Last Light
stealth routes and resource management
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.