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

Execution · Practiced Mastery
Tetris extended into 3D - spatial packing optimization executed under accelerating pressure.

Execution · Practiced Mastery
Memorising spawn patterns then executing them flawlessly under one-hit-death rules.
Blockout leans Execution (Practiced Mastery); Super Contra 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.
Blockout
Rotating polycubes on three axes under time pressure strains hands
Super Contra
One-hit deaths demand precise dodging and constant accurate fire
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Blockout
Solo pit - nothing to predict
Super Contra
Alien waves follow fixed spawn scripts
Blockout leans a little harder on variance, though the gap is small.
Blockout
Piece sequence is random but quickly bounded
Super Contra
Nothing random once spawn patterns are memorised
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Blockout
3D packing has optimal layer-clearing patterns to internalise
Super Contra
Memorising spawns and weapon routes is half the run
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.