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
Steering a WWI biplane through fixed scrolling terrain on timing and memorised targets.

Execution · Pure Mechanics
Push-forward arena FPS where movement and aim are the whole game.
Blue Max leans Execution (Pure Mechanics); DOOM (2016) leans Execution (Pure Mechanics).
DOOM (2016) leans a little harder on execution, though the gap is small.
Blue Max
Altitude control, bombing timing and dodging demand steady hands
DOOM (2016)
Aim, movement, glory-kill timing all peak.
DOOM (2016) leans a little harder on reads, though the gap is small.
Blue Max
Enemy planes fly scripted patterns
DOOM (2016)
Demons scripted attack patterns.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Blue Max
Terrain layout is fixed and memorisable
DOOM (2016)
Minimal encounter randomness.
DOOM (2016) leans a little harder on optimization, though the gap is small.
Blue Max
Learning target locations and fuel routes raises scores
DOOM (2016)
Rune and weapon mod picks meaningful.
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.