head to head
Ketsui: Kizuna Jigoku Tachi asks more than DOOM (2016), and the gap is execution.

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

Execution · Pure Mechanics
Cave's hardest bullet hell, built on suicidal close-range scoring and merciless execution demands.
DOOM (2016) leans Execution (Pure Mechanics); Ketsui: Kizuna Jigoku Tachi leans Execution (Pure Mechanics).
Ketsui: Kizuna Jigoku Tachi leans clearly harder on execution.
DOOM (2016)
Aim, movement, glory-kill timing all peak.
Ketsui: Kizuna Jigoku Tachi
Point-blank chip harvesting in bullet storms, brutal physical ceiling
DOOM (2016) leans a little harder on reads, though the gap is small.
DOOM (2016)
Demons scripted attack patterns.
Ketsui: Kizuna Jigoku Tachi
Enemies follow fixed scripts
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
DOOM (2016)
Minimal encounter randomness.
Ketsui: Kizuna Jigoku Tachi
Deterministic patterns, trivial randomness
Ketsui: Kizuna Jigoku Tachi leans clearly harder on optimization.
DOOM (2016)
Rune and weapon mod picks meaningful.
Ketsui: Kizuna Jigoku Tachi
Multiplier chip routing is a solved-route discipline
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.