head to head
Grand Theft Auto V asks more than Gauntlet Legends, and the gap is reads.

Execution · Practiced Mastery
Tests sustained crowd-kiting and spawner-priority decisions in co-op dungeon runs.

Execution · Practiced Mastery
Sandbox crime playground spanning shooting, driving, and a persistent online economy.
Gauntlet Legends leans Execution (Practiced Mastery); Grand Theft Auto V leans Execution (Practiced Mastery).
Gauntlet Legends leans a little harder on execution, though the gap is small.
Gauntlet Legends
Kiting endless spawners while shooting is the moment-to-moment test
Grand Theft Auto V
Driving and shooting demand decent inputs.
Grand Theft Auto V leans clearly harder on reads.
Gauntlet Legends
Mobs pour from generators on fixed logic
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.
Gauntlet Legends
Item and food spots are scripted-but-unknown initially
Grand Theft Auto V
Some mission and lobby randomness.
Gauntlet Legends leans a little harder on optimization, though the gap is small.
Gauntlet Legends
Generator-killing priority and character leveling reward planning
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.