head to head
Grand Theft Auto V asks more than Metroid: Other M, and the gap is reads.

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

Execution · Practiced Mastery
A linear, cinematic Metroid mixing third-person action with first-person aiming.
Grand Theft Auto V leans Execution (Practiced Mastery); Metroid: Other M leans Execution (Practiced Mastery).
Metroid: Other M leans a little harder on execution, though the gap is small.
Grand Theft Auto V
Driving and shooting demand decent inputs.
Metroid: Other M
Dodge-timing and pointer-switch finishers
Grand Theft Auto V leans clearly harder on reads.
Grand Theft Auto V
Online PvP exists but mostly gear/positioning, not modeling.
Metroid: Other M
Bosses run scripted patterns
Grand Theft Auto V leans a little harder on variance, though the gap is small.
Grand Theft Auto V
Some mission and lobby randomness.
Metroid: Other M
Linear, deterministic encounters
Metroid: Other M leans a little harder on optimization, though the gap is small.
Grand Theft Auto V
Heists, money loops, builds learnable.
Metroid: Other M
Learning boss movesets and item routes
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.