head to head
Brütal Legend asks more than Grand Theft Auto V, and the gap is optimization.

Optimization · Practiced Mastery
Tim Schafer's heavy-metal open world that morphs into RTS-style stage battles.

Execution · Practiced Mastery
Sandbox crime playground spanning shooting, driving, and a persistent online economy.
Brütal Legend leans Optimization (Practiced Mastery); Grand Theft Auto V leans Execution (Practiced Mastery).
Grand Theft Auto V leans a little harder on execution, though the gap is small.
Brütal Legend
Hack-and-slash combat is forgiving
Grand Theft Auto V
Driving and shooting demand decent inputs.
Brütal Legend leans a little harder on reads, though the gap is small.
Brütal Legend
Multiplayer stage battles pit you against adapting commanders
Grand Theft Auto V
Online PvP exists but mostly gear/positioning, not modeling.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Brütal Legend
Unit skirmish chaos adds noise
Grand Theft Auto V
Some mission and lobby randomness.
Brütal Legend leans clearly harder on optimization.
Brütal Legend
Stage-battle economy and unit counters reward strategy
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.