head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is execution, and it is a single point.

Variance · Systems & Chaos
Listening for randomised audio cues and executing a defensive checking routine.

Optimization · Systems & Chaos
A co-op party puzzle where one player defuses a bomb others describe from a manual.
Five Nights at Freddy's 4 leans Variance (Systems & Chaos); Keep Talking and Nobody Explodes leans Optimization (Systems & Chaos).
Five Nights at Freddy's 4 leans a little harder on execution, though the gap is small.
Five Nights at Freddy's 4
Reacting to breath audio cues within tight windows matters
Keep Talking and Nobody Explodes
Defusing under a timer punishes fumbling
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Five Nights at Freddy's 4
Animatronic movement is RNG, not an adapting mind
Keep Talking and Nobody Explodes
The bomb never adapts to you
Five Nights at Freddy's 4 leans a little harder on variance, though the gap is small.
Five Nights at Freddy's 4
Random animatronic positions stay hidden behind audio cues
Keep Talking and Nobody Explodes
Random module combinations every bomb
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 4
Door-checking routines become a learnable optimal loop
Keep Talking and Nobody Explodes
Mastering the manual turns chaos into procedure
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.