head to head
Neither is simply harder - they are hard in different places. Devil May Cry 3: Dante's Awakening demands more execution; Grand Theft Auto V demands more reads.

Execution · Practiced Mastery
The stylish-action benchmark where mastering styles, weapons, and Vergil's blade is the whole point.

Execution · Practiced Mastery
Sandbox crime playground spanning shooting, driving, and a persistent online economy.
Devil May Cry 3: Dante's Awakening leans Execution (Practiced Mastery); Grand Theft Auto V leans Execution (Practiced Mastery).
Devil May Cry 3: Dante's Awakening leans clearly harder on execution.
Devil May Cry 3: Dante's Awakening
Style-switch combos and Royal Guard timing are an execution Everest
Grand Theft Auto V
Driving and shooting demand decent inputs.
Grand Theft Auto V leans clearly harder on reads.
Devil May Cry 3: Dante's Awakening
Vergil is a hard script, not an adapting mind
Grand Theft Auto V
Online PvP exists but mostly gear/positioning, not modeling.
Grand Theft Auto V leans a little harder on variance, though the gap is small.
Devil May Cry 3: Dante's Awakening
Fixed tower; knowledge carries between runs
Grand Theft Auto V
Some mission and lobby randomness.
Devil May Cry 3: Dante's Awakening leans clearly harder on optimization.
Devil May Cry 3: Dante's Awakening
Style choice, weapon loadouts, and boss patterns reward labbing
Grand Theft Auto V
Heists, money loops, builds learnable.
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.