head to head
Tetris 99 asks more than DOOM (2016), and the gap is reads.

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

Execution · Pure Mechanics
Battle royale Tetris where raw stacking speed decides who outlasts 98 opponents.
DOOM (2016) leans Execution (Pure Mechanics); Tetris 99 leans Execution (Pure Mechanics).
Tetris 99 leans a little harder on execution, though the gap is small.
DOOM (2016)
Aim, movement, glory-kill timing all peak.
Tetris 99
High-speed stacking and finesse define survival
Tetris 99 leans clearly harder on reads.
DOOM (2016)
Demons scripted attack patterns.
Tetris 99
Targeting and badge timing against humans matter mid-match
Tetris 99 leans clearly harder on variance.
DOOM (2016)
Minimal encounter randomness.
Tetris 99
Incoming garbage timing and piece sequence add chaos
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.
Tetris 99
Stacking theory and downstack efficiency are studied skills
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.