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

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

Execution · Practiced Mastery
A scripted puzzle-platformer testing light timing and one-time puzzle solving.
Grand Theft Auto V leans Execution (Practiced Mastery); Planet Alpha 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.
Planet Alpha
Chase sequences and stealth timing demand modest precision
Grand Theft Auto V leans clearly harder on reads.
Grand Theft Auto V
Online PvP exists but mostly gear/positioning, not modeling.
Planet Alpha
Enemies follow fixed patrol scripts, no adaptation
Grand Theft Auto V leans a little harder on variance, though the gap is small.
Grand Theft Auto V
Some mission and lobby randomness.
Planet Alpha
Everything is scripted; nothing random after one playthrough
Planet Alpha leans a little harder on optimization, though the gap is small.
Grand Theft Auto V
Heists, money loops, builds learnable.
Planet Alpha
Day-night puzzle solutions are fixed and 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.