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

Execution · Pure Mechanics
Punishing combat execution against fast scripted enemies with deep encounter solutions.
DOOM (2016) leans Execution (Pure Mechanics); Ninja Gaiden II Black leans Execution (Pure Mechanics).
Ninja Gaiden II Black leans a little harder on execution, though the gap is small.
DOOM (2016)
Aim, movement, glory-kill timing all peak.
Ninja Gaiden II Black
Frame-tight blocking, dodging and combo routing define survival
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.
Ninja Gaiden II Black
Aggressive enemies still run scripted, learnable behaviour
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.
Ninja Gaiden II Black
Encounters fixed; spawns known after one run
Ninja Gaiden II Black leans a little harder on optimization, though the gap is small.
DOOM (2016)
Rune and weapon mod picks meaningful.
Ninja Gaiden II Black
Weapon choice, essence economy and encounter solutions matter
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.