head to head
XDefiant 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
Classic arena shooter with faction abilities.
DOOM (2016) leans Execution (Pure Mechanics); XDefiant leans Execution (Pure Mechanics).
XDefiant leans a little harder on execution, though the gap is small.
DOOM (2016)
Aim, movement, glory-kill timing all peak.
XDefiant
Fast arena TTK with no SBMM crutch
XDefiant leans clearly harder on reads.
DOOM (2016)
Demons scripted attack patterns.
XDefiant
Pre-aim and pacing duels reward prediction
XDefiant leans a little harder on variance, though the gap is small.
DOOM (2016)
Minimal encounter randomness.
XDefiant
Minimal RNG, mostly skill outcomes
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.
XDefiant
Faction abilities and attachments tune fights
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.