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

Optimization · Practiced Mastery
An open-world zombie game where crafting and objective routing matter more than combat skill.

Execution · Practiced Mastery
The black-sheep sequel whose passive enemies and dominant guns sand the series' skill ceiling way down.
Dead Rising 4 leans Optimization (Practiced Mastery); Devil May Cry 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.
Dead Rising 4
melee combos and zombie-horde movement
Devil May Cry 2
Infamously easy; guns trivialize most encounters
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Dead Rising 4
zombies are simple non-adaptive AI
Devil May Cry 2
Passive enemy AI never pressures, let alone adapts
Dead Rising 4 leans a little harder on variance, though the gap is small.
Dead Rising 4
item/weapon spawn randomness
Devil May Cry 2
Flat authored levels hide little
Dead Rising 4 leans a little harder on optimization, though the gap is small.
Dead Rising 4
weapon crafting and time-based objective routing
Devil May Cry 2
Amulet builds and boss patterns fall fast
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.