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
Isolating targets amid randomised crowds using traps and patience.
Five Nights at Freddy's: Secret of the Mimic leans Optimization (Systems & Chaos); Party Hard 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
Party Hard
Walking and stabbing need timing but little dexterity
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
Party Hard
Partygoers wander on RNG, not adaptive minds
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
Party Hard
Random traps, events and witness behaviour vary each level
Same score on optimization - 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
Mapping safe routes and mechanics converges to a routine
Party Hard
Trap usage and isolation tactics converge to known strategies
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.