head to head
Neither is simply harder - they are hard in different places. DOOM (2016) demands more execution; Nintendo World Cup demands more reads.

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

Execution · Pure Mechanics
Arcade soccer testing reflex tackles and super-shot timing.
DOOM (2016) leans Execution (Pure Mechanics); Nintendo World Cup leans Execution (Pure Mechanics).
DOOM (2016) leans clearly harder on execution.
DOOM (2016)
Aim, movement, glory-kill timing all peak.
Nintendo World Cup
Tackles and super-shot timing decide most goals
Nintendo World Cup leans clearly harder on reads.
DOOM (2016)
Demons scripted attack patterns.
Nintendo World Cup
Versus a human, shot fakes add light prediction
Nintendo World Cup leans a little harder on variance, though the gap is small.
DOOM (2016)
Minimal encounter randomness.
Nintendo World Cup
Ball physics add minor chaos
DOOM (2016) leans clearly harder on optimization.
DOOM (2016)
Rune and weapon mod picks meaningful.
Nintendo World Cup
Learning super-move triggers is a small solvable layer
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.