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 · Practiced Mastery
Rapture's plasmid-and-pistol shooter where ideology meets gunplay.

Execution · Practiced Mastery
The black-sheep sequel whose passive enemies and dominant guns sand the series' skill ceiling way down.
BioShock leans Execution (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.
BioShock
Shooting and plasmid timing required.
Devil May Cry 2
Infamously easy; guns trivialize most encounters
BioShock leans a little harder on reads, though the gap is small.
BioShock
Splicers scripted; behaviors fixed.
Devil May Cry 2
Passive enemy AI never pressures, let alone adapts
BioShock leans a little harder on variance, though the gap is small.
BioShock
Loot and splicer spawns randomized.
Devil May Cry 2
Flat authored levels hide little
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
BioShock
Tonics, plasmids, weapon upgrades solvable.
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.