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
Cave's genre-defining bullet hell where survival is execution and score is a memorized chain route.
Dark Souls III leans Execution (Practiced Mastery); DoDonPachi leans Execution (Practiced Mastery).
DoDonPachi leans a little harder on execution, though the gap is small.
Dark Souls III
fast roll timing against aggressive scripted bosses
DoDonPachi
Threading dense bullet curtains demands pixel-perfect movement
Dark Souls III leans a little harder on reads, though the gap is small.
Dark Souls III
PvP invasions exist but are optional
DoDonPachi
Fixed scripted patterns, nothing adapts
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
DoDonPachi
Near-fully deterministic once patterns are learned
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
DoDonPachi
Chain meter routing defines high-level play entirely
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.