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 · Pure Mechanics
A survival arena shooter where raw execution against memorised escalating enemy waves defines how long you last.

Execution · Practiced Mastery
Punishing platforming execution over learnable boss orders and part builds.
Devil Daggers leans Execution (Pure Mechanics); Mega Man X6 leans Execution (Practiced Mastery).
Devil Daggers leans a little harder on execution, though the gap is small.
Devil Daggers
Pure survival time depends on flawless movement and dagger precision
Mega Man X6
Cruel platforming and boss windows demand frame-tight inputs
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Devil Daggers
Spider AI and homing skulls are scripted; no adaptive opponent
Mega Man X6
Bosses are fixed pattern sets
Devil Daggers leans a little harder on variance, though the gap is small.
Devil Daggers
Enemy spawn waves escalate on a fixed timer with some positional variance
Mega Man X6
The Nightmare System shuffles level hazards between runs
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Devil Daggers
Dagger upgrade timing and crowd-control positioning are learnable strategies
Mega Man X6
Weapon orders, armor parts and route knowledge are essential
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.