head to head
Grand Theft Auto V asks more than X-Men Origins: Wolverine, and the gap is reads.

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

Execution · Practiced Mastery
Visceral hack-and-slash movie tie-in where Wolverine shreds everything in reach.
Grand Theft Auto V leans Execution (Practiced Mastery); X-Men Origins: Wolverine 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.
Grand Theft Auto V
Driving and shooting demand decent inputs.
X-Men Origins: Wolverine
Lunge timing and combo flow carry brawls.
Grand Theft Auto V leans clearly harder on reads.
Grand Theft Auto V
Online PvP exists but mostly gear/positioning, not modeling.
X-Men Origins: Wolverine
Enemies attack on fixed scripts.
Grand Theft Auto V leans a little harder on variance, though the gap is small.
Grand Theft Auto V
Some mission and lobby randomness.
X-Men Origins: Wolverine
Almost none; encounters are staged.
X-Men Origins: Wolverine leans a little harder on optimization, though the gap is small.
Grand Theft Auto V
Heists, money loops, builds learnable.
X-Men Origins: Wolverine
Mutagen builds and skill unlocks are simple to solve.
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.