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
The Guitar Hero entry that added drums and vocals to chase full-band play.
DOOM (2016) leans Execution (Pure Mechanics); Guitar Hero: World Tour 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.
Guitar Hero: World Tour
Fret-and-strum accuracy on expert note charts
DOOM (2016) leans a little harder on reads, though the gap is small.
DOOM (2016)
Demons scripted attack patterns.
Guitar Hero: World Tour
Charts never adapt
DOOM (2016) leans a little harder on variance, though the gap is small.
DOOM (2016)
Minimal encounter randomness.
Guitar Hero: World Tour
Deterministic charts
DOOM (2016) leans a little harder on optimization, though the gap is small.
DOOM (2016)
Rune and weapon mod picks meaningful.
Guitar Hero: World Tour
Star power activation paths drive top scores
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.