head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Execution · Practiced Mastery
Ninja Theory's stylish-action reboot with angel-demon stance switching through a shifting Limbo.

Execution · Practiced Mastery
Dash-precision platforming with solvable boss orders and upgrade routing.
DmC: Devil May Cry leans Execution (Practiced Mastery); Mega Man X5 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.
DmC: Devil May Cry
Angel/demon stance weaving is demanding but softer than mainline
Mega Man X5
Dash-jump precision and boss dodge timing demand clean hands
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
DmC: Devil May Cry
Color-coded enemies dictate fixed answers
Mega Man X5
Mavericks cycle fixed attack patterns
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
DmC: Devil May Cry
Limbo levels are authored spectacle, not random
Mega Man X5
Random ending triggers add rare unmapped outcomes
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
DmC: Devil May Cry
Color-coding turns encounters into solvable matching puzzles
Mega Man X5
Armor parts, boss order and route knowledge solve the game
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.