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
Souls-flavored action-adventure where Fury whips through the Seven Deadly Sins on a ruined Earth.

Execution · Practiced Mastery
Two Spider-Men, faster traversal, and deeper combo systems.
Darksiders III leans Execution (Practiced Mastery); Marvel's Spider-Man 2 leans Execution (Practiced Mastery).
Darksiders III leans a little harder on execution, though the gap is small.
Darksiders III
Souls-style dodge timing with punishing windows carries fights
Marvel's Spider-Man 2
Symbiote and dual-hero combat demands inputs.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Darksiders III
Sin bosses are pattern sets, not adaptive minds
Marvel's Spider-Man 2
Enemies scripted, not modeling player.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Darksiders III
Hidden upgrades matter once; world is fixed
Marvel's Spider-Man 2
Light open-world randomness.
Darksiders III leans a little harder on optimization, though the gap is small.
Darksiders III
Hollow swapping, upgrade routing, and moveset study pay off
Marvel's Spider-Man 2
Expanded skill trees and gadget combos 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.