head to head
Grand Theft Auto V asks more than Marvel's Avengers, and the gap is reads.

Execution · Practiced Mastery
Sandbox crime playground spanning shooting, driving, and a persistent online economy.

Optimization · Practiced Mastery
A loot brawler testing build grinding more than the forgiving combat itself.
Grand Theft Auto V leans Execution (Practiced Mastery); Marvel's Avengers leans Optimization (Practiced Mastery).
Grand Theft Auto V leans a little harder on execution, though the gap is small.
Grand Theft Auto V
Driving and shooting demand decent inputs.
Marvel's Avengers
Brawler combos with generous timing windows
Grand Theft Auto V leans clearly harder on reads.
Grand Theft Auto V
Online PvP exists but mostly gear/positioning, not modeling.
Marvel's Avengers
Enemy waves are scripted spawns, nothing adapts
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Grand Theft Auto V
Some mission and lobby randomness.
Marvel's Avengers
Loot rolls drive gear progression randomness
Marvel's Avengers leans a little harder on optimization, though the gap is small.
Grand Theft Auto V
Heists, money loops, builds learnable.
Marvel's Avengers
Gear score and skill-tree builds are the long-term layer
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.