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
A rail-shooter endurance test of target tracking against memorised enemy waves.
DOOM (2016) leans Execution (Pure Mechanics); T2: The Arcade Game 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.
T2: The Arcade Game
Tracking dozens of targets with cursor speed is everything
DOOM (2016) leans a little harder on reads, though the gap is small.
DOOM (2016)
Demons scripted attack patterns.
T2: The Arcade Game
Waves are choreographed, nothing adapts
T2: The Arcade Game leans a little harder on variance, though the gap is small.
DOOM (2016)
Minimal encounter randomness.
T2: The Arcade Game
Spawn details blur slightly but patterns dominate
DOOM (2016) leans a little harder on optimization, though the gap is small.
DOOM (2016)
Rune and weapon mod picks meaningful.
T2: The Arcade Game
Learning wave order and powerup spots stretches credits
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.