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

Execution · Practiced Mastery
Cinematic combo-action reboot of Castlevania in the God of War mold.

Execution · Practiced Mastery
Two Spider-Men, faster traversal, and deeper combo systems.
Castlevania: Lords of Shadow leans Execution (Practiced Mastery); Marvel's Spider-Man 2 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.
Castlevania: Lords of Shadow
Combo timing, dodges, and QTE precision
Marvel's Spider-Man 2
Symbiote and dual-hero combat demands inputs.
Marvel's Spider-Man 2 leans a little harder on reads, though the gap is small.
Castlevania: Lords of Shadow
Bosses and titans are fully scripted
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.
Castlevania: Lords of Shadow
Deterministic encounters
Marvel's Spider-Man 2
Light open-world randomness.
Castlevania: Lords of Shadow leans a little harder on optimization, though the gap is small.
Castlevania: Lords of Shadow
Combo unlocks and learning fixed movesets
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.