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 · Pure Mechanics
Peak 16-bit run-and-gun of set-piece bosses and razor-thin dodges.

Execution · Pure Mechanics
A vertical bullet-hell shmup testing dodging precision against scripted patterns.
Contra III: The Alien Wars leans Execution (Pure Mechanics); Raiden V leans Execution (Pure Mechanics).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Contra III: The Alien Wars
Relentless bosses and bullet dodging
Raiden V
Dodging bullet patterns while shooting is the entire skill
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Contra III: The Alien Wars
Set-piece bosses are pure scripts
Raiden V
Enemies follow fixed scripted patterns, not adapting
Raiden V leans a little harder on variance, though the gap is small.
Contra III: The Alien Wars
Everything is fixed and learnable
Raiden V
Patterns are memorizable, little true randomness
Contra III: The Alien Wars leans a little harder on optimization, though the gap is small.
Contra III: The Alien Wars
Weapon management and pattern memorization
Raiden V
Weapon selection and route learning is a meaningful layer
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.