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
Punishing platforming execution over learnable boss orders and part builds.

Execution · Practiced Mastery
Balletic side-scrolling shooter about chaining stylish slow-motion gun acrobatics.
Mega Man X6 leans Execution (Practiced Mastery); My Friend Pedro leans Execution (Practiced Mastery).
Mega Man X6 leans a little harder on execution, though the gap is small.
Mega Man X6
Cruel platforming and boss windows demand frame-tight inputs
My Friend Pedro
Slow-motion acrobatic gunplay rewards precise control
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Mega Man X6
Bosses are fixed pattern sets
My Friend Pedro
Enemies are static placements
Mega Man X6 leans a little harder on variance, though the gap is small.
Mega Man X6
The Nightmare System shuffles level hazards between runs
My Friend Pedro
Deterministic levels
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Mega Man X6
Weapon orders, armor parts and route knowledge are essential
My Friend Pedro
Score-chasing optimal routes and trick chains
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.