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.

Execution · Practiced Mastery
The fastest mainline Souls, distilling the formula into aggressive boss duels.

Execution · Practiced Mastery
A sci-fi soulslike where cutting specific limbs makes even the loot system an optimization problem.
Dark Souls III leans Execution (Practiced Mastery); The Surge leans Execution (Practiced Mastery).
Dark Souls III leans a little harder on execution, though the gap is small.
Dark Souls III
fast roll timing against aggressive scripted bosses
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.
Dark Souls III
PvP invasions exist but are optional
The Surge
No adaptive opposition; enemies run fixed scripts.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Dark Souls III
fixed encounters converge after first sight
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.
Dark Souls III
movesets and builds are fully mappable
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.