head to head
The New Tetris asks more than Grand Theft Auto V, and the gap is execution.

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

Execution · Practiced Mastery
A Tetris variant testing placement speed with a square-building scoring layer.
Grand Theft Auto V leans Execution (Practiced Mastery); The New Tetris leans Execution (Practiced Mastery).
The New Tetris leans clearly harder on execution.
Grand Theft Auto V
Driving and shooting demand decent inputs.
The New Tetris
Fast precise placement under speed is the lead axis
Grand Theft Auto V leans a little harder on reads, though the gap is small.
Grand Theft Auto V
Online PvP exists but mostly gear/positioning, not modeling.
The New Tetris
Multiplayer adds light prediction, mostly solo speed
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.
The New Tetris
Piece bag is random but bounded and mappable
The New Tetris leans clearly harder on optimization.
Grand Theft Auto V
Heists, money loops, builds learnable.
The New Tetris
Building 4x4 squares for bonus rewards deeper strategy
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.