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
First-person physics platformer about leaping across a convoy of crashing trucks.

Execution · Pure Mechanics
A Tetris variant collection testing placement speed across multiple rule sets.
Clustertruck 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.
Clustertruck
Frame-tight jumps across moving trucks
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.
Clustertruck
No opponent
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.
Clustertruck
Physics chaos makes truck piles unpredictable
Super Tetris 3
Piece sequence is random but bounded and mappable
Clustertruck leans a little harder on optimization, though the gap is small.
Clustertruck
Route lines and ability use for speedruns
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.