head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is reads, and it is a single point.

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

Execution · Pure Mechanics
One-hit-kill room clearing where dive timing and aim decide everything.
DOOM (2016) leans Execution (Pure Mechanics); The Hong Kong Massacre leans Execution (Pure Mechanics).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
DOOM (2016)
Aim, movement, glory-kill timing all peak.
The Hong Kong Massacre
One-hit deaths make dive-and-shoot precision everything
DOOM (2016) leans a little harder on reads, though the gap is small.
DOOM (2016)
Demons scripted attack patterns.
The Hong Kong Massacre
Enemies react on fixed triggers, never modelling you
The Hong Kong Massacre leans a little harder on variance, though the gap is small.
DOOM (2016)
Minimal encounter randomness.
The Hong Kong Massacre
Enemy placements are scripted-but-unknown on first attempt
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
DOOM (2016)
Rune and weapon mod picks meaningful.
The Hong Kong Massacre
Room-clearing order and slow-mo budgeting reward planning
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.