Building comparison
head to head
Dark Souls IIIvsDemon's Souls
Neither is meaningfully harder - they pose close to the same test. The widest gap is execution, and it is a single point.
Dark Souls III
Execution · Practiced Mastery
The fastest mainline Souls, distilling the formula into aggressive boss duels.
Demon's Souls
Execution · Practiced Mastery
The original Souls game: scripted boss patterns you solve with builds, routes and disciplined execution.
Dark Souls III leans Execution (Practiced Mastery); Demon's Souls leans Execution (Practiced Mastery).
Dark Souls IIIDemon's Souls
Axis by axis
Execution8 vs 7
Dark Souls III leans a little harder on execution, though the gap is small.
Dark Souls III
fast roll timing against aggressive scripted bosses
Demon's Souls
Stamina-timed dodges and parries punish sloppy hands.
Reads1 vs 1
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
Demon's Souls
Invasions exist but bosses are scripted patterns.
Variance1 vs 2
Demon's Souls leans a little harder on variance, though the gap is small.
Dark Souls III
fixed encounters converge after first sight
Demon's Souls
World tendency and upgrade drops add mild noise.
Optimization7 vs 7
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
Demon's Souls
Builds, routes and learned movesets are fully 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.