head to head
Neither is simply harder - they are hard in different places. Dead by Daylight demands more optimization; Unfortunate Spacemen demands more variance.

Reads · Competitive PvP
Asymmetric horror PvP where four survivors out-think one human killer.

Reads · Bluff & Deduction
Spacemen complete station tasks while a shapeshifting monster impersonates and eats them.
Dead by Daylight leans Reads (Competitive PvP); Unfortunate Spacemen leans Reads (Bluff & Deduction).
Dead by Daylight leans a little harder on execution, though the gap is small.
Dead by Daylight
chase loops, skill checks, and 360 dodges
Unfortunate Spacemen
Shooter combat matters once the monster is exposed.
Unfortunate Spacemen leans a little harder on reads, though the gap is small.
Dead by Daylight
killer-survivor mind games never stop adapting
Unfortunate Spacemen
The shapeshifter wins by out-modeling suspicious human crewmates.
Unfortunate Spacemen leans clearly harder on variance.
Dead by Daylight
map, perk, and pallet RNG shapes each trial
Unfortunate Spacemen
Hidden monster identity and random objectives drive uncertainty.
Dead by Daylight leans clearly harder on optimization.
Dead by Daylight
perk builds and loop routes are studied
Unfortunate Spacemen
Station layouts and objective flow reward repetition modestly.
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.