head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Execution · Practiced Mastery
Memorising spawn patterns then executing them flawlessly under one-hit-death rules.

Execution · Practiced Mastery
A speedrun shooter testing teleport execution against optimised level routes.
Super Contra leans Execution (Practiced Mastery); Velocity Ultra 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.
Super Contra
One-hit deaths demand precise dodging and constant accurate fire
Velocity Ultra
Teleport precision at full throttle defines perfect medals
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Super Contra
Alien waves follow fixed spawn scripts
Velocity Ultra
Hazards are fixed level geometry, not minds
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Super Contra
Nothing random once spawn patterns are memorised
Velocity Ultra
Levels are identical every attempt
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Super Contra
Memorising spawns and weapon routes is half the run
Velocity Ultra
Route planning through bomb switches is half the score chase
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.