head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is execution, and it is a single point.

Execution · Pure Mechanics
Pure car control over loose surfaces, sharpened by memorising every stage.

Execution · Pure Mechanics
A Tetris variant collection testing placement speed across multiple rule sets.
Colin McRae Rally 2.0 leans Execution (Pure Mechanics); Super Tetris 3 leans Execution (Pure Mechanics).
Super Tetris 3 leans a little harder on execution, though the gap is small.
Colin McRae Rally 2.0
Surface-specific car control at speed decides every stage
Super Tetris 3
Precise piece placement under accelerating speed is everything
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Colin McRae Rally 2.0
Time-trial format - no adaptive opponent on the stage
Super Tetris 3
Solo, no opponent to predict in standard modes
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Colin McRae Rally 2.0
Mid-stage surprises minimal once pace notes are internalised
Super Tetris 3
Piece sequence is random but bounded and mappable
Colin McRae Rally 2.0 leans a little harder on optimization, though the gap is small.
Colin McRae Rally 2.0
Memorising stages and tuning setups converges times steadily
Super Tetris 3
Stacking strategy has known optimal patterns
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.