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.

Optimization · Systems & Chaos
A horror stealth game testing how fast you map a monster's hidden rules.

Optimization · Systems & Chaos
Managing a survivor community's economy and risk under permadeath randomness.
Five Nights at Freddy's: Secret of the Mimic leans Optimization (Systems & Chaos); State of Decay 2 leans Optimization (Systems & Chaos).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Five Nights at Freddy's: Secret of the Mimic
Walking, hiding and gadget use under pressure, modest demands
State of Decay 2
Combat is forgiving; stealth and swings need modest timing
Five Nights at Freddy's: Secret of the Mimic leans a little harder on reads, though the gap is small.
Five Nights at Freddy's: Secret of the Mimic
The Mimic is scripted-plus-random, not a genuine adapting mind
State of Decay 2
Zombies and hostile NPCs follow randomised scripts
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Five Nights at Freddy's: Secret of the Mimic
Costume disguises and patrol behaviour stay hidden until learned
State of Decay 2
Permadeath, infestations and survivor traits randomise each community
State of Decay 2 leans a little harder on optimization, though the gap is small.
Five Nights at Freddy's: Secret of the Mimic
Mapping safe routes and mechanics converges to a routine
State of Decay 2
Base building, resource routing and survivor management drive survival
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.