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

Execution · Practiced Mastery
The original Souls game: scripted boss patterns you solve with builds, routes and disciplined execution.

Execution · Practiced Mastery
A sci-fi soulslike where cutting specific limbs makes even the loot system an optimization problem.
Demon's Souls leans Execution (Practiced Mastery); The Surge leans Execution (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Demon's Souls
Stamina-timed dodges and parries punish sloppy hands.
The Surge
Directional limb-targeting and dodge timing are demanding.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Demon's Souls
Invasions exist but bosses are scripted patterns.
The Surge
No adaptive opposition; enemies run fixed scripts.
Demon's Souls leans a little harder on variance, though the gap is small.
Demon's Souls
World tendency and upgrade drops add mild noise.
The Surge
Targeted dismemberment makes loot largely deterministic.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Demon's Souls
Builds, routes and learned movesets are fully solvable.
The Surge
Rig power budgeting and learned movesets are 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.