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 · Pure Mechanics
A boss-rush action game that is nothing but execution tests against scripted duelists.

Execution · Pure Mechanics
Faster, gorier sequel built around dismembering aggressive enemies before they swarm you.
Furi leans Execution (Pure Mechanics); Ninja Gaiden Sigma 2 leans Execution (Pure Mechanics).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Furi
Parry timing, bullet dodging, and duel precision
Ninja Gaiden Sigma 2
Delimb-and-finish combat under constant projectile pressure stays brutal
Furi leans a little harder on reads, though the gap is small.
Furi
Bosses are scripted patterns, however adversarial they feel
Ninja Gaiden Sigma 2
Aggressive enemy AI remains pattern-driven
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Furi
Fixed boss sequences
Ninja Gaiden Sigma 2
Fixed missions; little randomness across runs
Ninja Gaiden Sigma 2 leans a little harder on optimization, though the gap is small.
Furi
Learning each boss's phases converges to mastery
Ninja Gaiden Sigma 2
Weapon matchups and essence routing reward system study
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.