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
Old-school platforming execution through short, fixed western levels.

Execution · Practiced Mastery
Classic action execution through fixed levels and scripted boss patterns.
Gunman Clive leans Execution (Pure Mechanics); Spider-Man leans Execution (Practiced Mastery).
Gunman Clive leans a little harder on execution, though the gap is small.
Gunman Clive
Tight jumps and duck-shoot timing carry all sixteen levels
Spider-Man
Swinging, combat and timed escapes need real dexterity
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Gunman Clive
Bandits and bosses run fixed patterns
Spider-Man
Villains repeat fixed boss patterns
Spider-Man leans a little harder on variance, though the gap is small.
Gunman Clive
Levels never change between attempts
Spider-Man
Level events are scripted and quickly known
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Gunman Clive
Boss pattern learning and weapon upgrades round out clears
Spider-Man
Boss patterns and level routes are fully learnable
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.