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
Comic-panel beat 'em up notorious for punishing health drain and tough fights.

Execution · Pure Mechanics
A frantic SNES space-western gallery shooter about dodging while you shoot.
Comix Zone leans Execution (Pure Mechanics); Wild Guns 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.
Comix Zone
Brutal one-life brawling demands clean play
Wild Guns
Simultaneous aiming and dodging defines the whole game
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Comix Zone
Enemies follow fixed attack scripts
Wild Guns
Enemy waves are fully scripted
Wild Guns leans a little harder on variance, though the gap is small.
Comix Zone
Everything is placed and scripted
Wild Guns
Bullet spawns vary slightly until patterns are absorbed
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Comix Zone
Panel routes and item use are memorizable
Wild Guns
Stage routing and pattern memorization converge for high scores
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.