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
Careful descent through procedural depths balancing survival systems against permadeath.

Variance · Systems & Chaos
The harder sequel that swaps doors for a mask and forces a frantic multitasking routine against more animatronics.
Below leans Variance (Systems & Chaos); Five Nights at Freddy's 2 leans Variance (Systems & Chaos).
Below leans a little harder on execution, though the gap is small.
Below
Stamina-based combat punishes sloppy dodges and swings
Five Nights at Freddy's 2
Mask, flashlight, and music box juggling demands fast hands
Five Nights at Freddy's 2 leans a little harder on reads, though the gap is small.
Below
Creatures and the Darkness follow rules, not minds
Five Nights at Freddy's 2
RNG-driven animatronics, not adaptive opponents
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Below
Procedural floors, traps and loot reshape every descent
Five Nights at Freddy's 2
More stalkers, more hidden movement rolls
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Below
Survival crafting and trap knowledge converge with experience
Five Nights at Freddy's 2
Optimal check rotations make late nights solvable
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.